Nitrophenol Essay Example for Free

Nitrophenol Essay Abstract: Using a micro scale steam distillation we separated ortho and para-nitrophenol from a mixture that was already made. After the para and ortho were separated we measured their melting points and compared it to the literature values for purity. For ortho-nitrophenol we had 60% recovery and for para 160% recovery. Our melting point ranges were ortho: 45-46Â °C and para 64-95Â °C. Introduction:Â  Nitration: In phenols, -OH group strongly activates the ring system. As a result, phenols are susceptible to oxidation in the presence of concentrated nitric acid (HNO3). Thus, nitration of phenols is carried out with dilute nitric acid and results in the formation of o-nitrophenol and p-nitrophenol. The o-nitrophenol is steam volatile and the mixture of o-nitrophenol and p-nitrophenol is separated by steam distillation, in our case using micro scale measurements for safety and time consumption purposes. (Electrophilic aromatic substitution) We used steam distillation because we are distilling under 100Â °C; above 100Â °C is H2O. Looking at the volatility of o-nitrophenol compared to p-nitrophenol, the p-nitrophenol has intermolecular hydrogen bonding and it occurs due to a large number of molecules are associated together. This association in the p-isomer makes it less volatile. However in o-nitrophenol, intramolecular hydrogen bonding occurs and thus, it exists in a monomolecular state making it more volatile. Results/Discussion: Using a sand bath for transferring of heat through the distillation which was sitting on a hot plate. Using a small round bottom flask which was attached to Hickman’s distillation head and then we attached water through the openings. Using 1.00g of the prepared mixture we placed it in the round bottom flask along with 1.00mL of ethanol and then filled it about 2/3 with water. We added a magnetic spin-vane to the flask as well. We collected the yellow waxy ortho-isomer from groove in Hickman’s distillation head using a Pasteur pipette. We made sure that the solids did not accumulate as this would clog the condenser. If it did we would just turn off the cold water momentarily and the hot vapor would melt the solid. The distillation took about 45 minutes and even though this was the specified time period for distilling the mixture, we felt as though much of the ortho-isomer was left in the small round bottom flask along with the para-isomer and the spin valve. In order to characterize the 2- and 4-nitrophenols, we need to determine their melting points. We compared our results to those in the literature. Data:Â  *some ortho solidified in the Pasteur pipette so there might arise a percent error from this as some ortho was left in there. *we assumed that the starting mixture was about 50% each of o- and p-nitrophenol.

cold war :: essays research papers

1991 Gorbachev resigns as president of the USSR Mikhail Gorbachev announces that he is resigning as president of the Soviet Union. In truth, there was not much of a Soviet Union from which to resign--just four days earlier, 11 of the former Soviet republics had established the Commonwealth of Independent States (CIS), effectively dismembering the USSR. The Soviet Union, for all intents and purposes, had already ceased to exist. In his farewell speech to the nation, Gorbachev indicated that the recent establishment of the CIS was the primary motive for his resignation, claiming he was "concerned about the fact that the people in this country are ceasing to become citizens of a great power and the consequences may be very difficult for all of us to deal with." In words that were sometimes prideful, sometimes resentful, Gorbachev stated that he stood on his record of achievement. He had, he claimed, overseen the Soviet Union's trip down the "road of democracy." His reforms "steered" the communist economy "toward the market economy." He declared that the Russian people were "living in a new world" in which an "end has been put to the Cold War and to the arms race." Admitting "there were mistakes made," Gorbachev remained adamant that he "never had any regrets" about the policies he pursued. In reality, Gorbachev had lost much of his power and prestige in the Soviet Union even before the establishment of the CIS. The economy was unstable. No one seemed pleased by Gorbachev-some opponents demanded even more political freedom while hard-liners in his government opposed any movement toward reform. In August 1991, he survived a coup attempt only through the assistance of Russian Federation

History Marking Scheme

Junior Certificate History Exam 2012 (Higher Level) 180 marks 150 minutes   S. 1 Pictures (15 marks) (8 ? %) 3 Pictures with 3 questions each S. 2 Documents (15 marks) (8 ? %) 2 Documents with 4/5 questions each S. 3 Short Questions (20 marks) (11 %) 20 Short Questions – Do TEN at least S. 4 People in History (40 marks – 2 x 20) (22%) N. B. DO ONE option from A & ONE option from B Section A – Ancient Civilisations/ Rome/ Early Christian Ireland/ Middle Ages/ RenaissanceSection B – Age of Revolutions/ Industrial Revolution/ Political Change in 20th Century Ireland/ S. 5 Long Document (30 marks) (16 ? %) ONLY ONE of the following sections will come up. Reformation Age of Revolutions (America, France, Ireland) Age of Exploration Industrial Revolution & 19th Century Ireland (Famine) Plantations S. 6 (60 marks) (33 1/3%) N. B. International Relations in the 20th Century (30) Political Change in 20th Century Ireland (30) (+ Two other sections from Junior Cert Course e. g. The Middle Ages/ Prehistoric Ireland) SECTION 4: PEOPLE IN HISTORY (2 x 20 marks)Do ONE OPTION from Part A & ONE OPTION from Part B Marking Scheme: SRS = Significant Relevant Statement (Each SRS = 2 marks) CM = 16 (8 x 2M) OM = Overall Mark OM = 4 VERY GOOD = 4M; GOOD = 3M; FAIR = 2M; POOR = 1M Guidelines: 1) ENSURE that you are writing from the correct perspective e. g. a supporter of a named revolutionary 2) Always include an introductory paragraph on the birth and early life of a named explorer/ reformer/ revolutionary leader etc. 3) Ensure that you STATE & EXPLAIN key concepts e. g. ‘Justification by Faith Alone’/ Republicanism/ Sailing West to reach the East Indies ) ALWAYS name & describe the widely-held beliefs of the time of the named person e. g. Church control over peoples’ religious beliefs/ Flat-Earth/ Ireland as part of the UK/ USA as a colony of England/ 5) NAME the group(s)/ organisation(s) who were founded by or supported the beliefs of the named person 6) ALWAYS NAME & DESCRIBE the impact of inventions/ innovations that aided the stated person & their beliefs/ revolution e. g. Printing Press/ Astrolabe/ Magnetic Compass/ Seed Drill/ Selective Breeding/ Factory System/ Steam Locomotive/ Home Rule/ IRB Fenianism/ Fascism/ Communism/ ) DESCRIBE & EXPLAIN how people and institutions reacted to the named person’s beliefs/ discoveries e. g. the Counter-Reformation/ superstitions of sailors during the Age of Discovery/ British refusal to accept Irish Independence/ 8) DESCRIBE the impact of the named person on later history itself: Spread of Protestantism throughout Europe/ Counter-Reformation/ Spanish Inquisition/ Discovery of American Continents/ New Colonies/ New ways of travelling/ Spread of Irish Republicanism/ Spread of Communism/ Spread of Fascism in Europe PART A OPTIONS (PEOPLE IN HISTORY) EARLY MODERN EUROPE & IRELAND A monk in an early Christian monastery in Ireland (2011/ 07/ 05) N. B. – A per son living in a named ancient civilisation OUTSIDE of Ireland. (11/ 09/ 06/ 04) N. B. – A farmer living in ancient (pre-Christian) Ireland. (08/ 05) – A named religious reformer at the time of the Reformation (2011/ 08) N. B. – An archaeologist working on a dig. (2010/ 07/ 04) – The lord or lady of a medieval castle. (2010/ 08) – A knight living in a medieval castle. (05) N. B. A named Renaissance artist from OUTSIDE of Italy. (2009) N. B. – A named Renaissance artist or sculptor (07 (PART B)/ 04) N. B. PART B OPTIONS (PEOPLE IN HISTORY) Later Modern Europe & Ireland – A named leader on a voyage during the Age of Exploration (2011/ 09/ 06 (PART A) N. B. – A native Irish landowner who lost land in a named plantation during the 16th or 17th centuries. (2011) – A settler who received land during a named plantation in Ireland during the 16th or 17th N. B. entury. (08/ 06 (PART A)/ 04) – A mine or factory worker during the Industrial Revolution. (07) N. B. – A factory or mine owner during the Industrial Revolution (05) N. B. – A named leader in the struggle for Irish independence, 1900-1921. (2011/ 07/ 05) N. B. – A named leader involved in a revolution (America, France or Ireland) during the period, 1770-1815. (2010/ 05) N. B. – A supporter of a named revolutionary leader during the period, 1770-1803. 06) N. B. – A named leader involved in one of the crises during the rise of the superpowers (Berlin Blockade; Korean War; Cuban Missile Crisis). (2010/ 06) N. B. – A named political leader in the Republic of Ireland during the period, 1960-1985. (08 ) – An old person describing changes that have occurred in communications in Ireland since 1945. (04) A – A named religious reformer at the time of the Reformation. (20 marks) A specific reformer (eg: Luther, Calvin, Henry VIII) must be named or implied, but no marks are awarded for the reformerâ⠂¬â„¢s name.If the name of the reformer is not mentioned, or is incorrect, but the material relates to a specific reformer, max. OM = 3. In the case of Luther, treat all material up to and including his ordination as ‘background’, i. e. 1 SRS max. In the case of Calvin, treat all material up to and including his conversion to Luther’s teaching as ‘background’, i. e. 1 SRS max. List of ‘abuses’, stated or explained, = 1 SRS. A belief/teaching explained = 1 SRS. A belief coupled with the relevant Catholic teaching = 1 SRS. 2 merely stated beliefs/teachings = 1 SRS. Teachings/beliefs = 3 SRSs max. ESSAY PLAN: NAME the reformer/ year of birth/ background & education – NAME & EXPLAIN the list of abuses within the Roman Church: – STATE the reformer’s beliefs and opinion of abuses in detail – NAME the steps he took to address these abuses – STATE & DESCRIBE the Church’s reaction to the reformer’s actions/ beliefs – NAME the reformer’s beliefs and EXPLAIN N. B. ***** – NAME any associates who aided the reformer – NAME any invention/ innovation that helped to spread the reformer’s beliefs – DESCRIBE the impact of the reformer’s teachings/ beliefs – DESCRIBE how the Church reacted to the reformerA – A knight living in a medieval castle. – Castle or Knight only dealt with – 1 OM. – Name of a castle feature + description / function = 1 SRS. – Mere list of castle features without description/function – 2 features = 1 SRS. ESSAY PLAN: – NAME yourself (you are the knight) – STATE who your LORD is and your allegiance to him – DESCRIBE WHAT YOUR ROLE is in the CASTLE & HOW you defend it – NAME & DESCRIBE WHERE the LORD & HIS FAMILY LIVES (KEEP) – DESCRIBE 3 DEFENSIVE FEATURES OF the castle – DESCRIBE the 3 STAGES of becoming a medieval knight â⠂¬â€œ DESCRIBE the tournaments & jousts that you regularly participate in DESCRIBE your belief in the ‘Code of CHIVALRY’ N. B. *** B – A supporter of a named revolutionary leader (USA, France, Ireland), 1770-1803. Do not award marks for naming the revolutionary leader. In the case of George Washington, treat all material prior to the First Continental Congress as ‘background’, i. e. 1 SRS max. In the case of Robespierre, treat all material prior to the outbreak of the French Revolution in 1789 as ‘background’, i. e. 1 SRS max. In the case of Wolfe Tone, treat all material prior to the founding of the United Irishmen as ‘background, i. e. 1 SRS max.In the case of Robert Emmet, treat all material prior to his involvement with the United Irishmen as ‘background’, i. e. 1 SRS max. ESSAY PLAN: – NAME the leader who you are supporting – NAME the country & time period (1765 – 1783) – STATE YOUR REA SONS for supporting the revolutionary leader i. e. taxes/ interference from colonial power etc. – NAME the reasons why a revolution is taking place – NAME & DESCRIBE AT LEAST TWO incidents where conflict has occurred between the revolutionaries & the colonial power – DESCRIBE how the RULING POWER is reacting to THIS REVOLUTIONARY & Revolution NAME & DESCRIBE any documents or beliefs expressed by this revolutionary leader or revolutionary group – STATE what the revolutionary leader is aiming for i. e. a coming decisive battle B – A named revolutionary leader (USA, France or Ireland) No marks for the revolutionary leader’s name. – If the material clearly relates to a particular revolutionary leader without the person being named, mark on its merits. – In the case of George Washington, treat all material prior to the First Continental Congress as background, i. e. 1 SRS. In the case of Robespierre, treat all material prior to the outbreak of Revolution in1789 as background. – In the case of Wolfe Tone, treat all material prior to the founding of the United Irishmen in 1791 as background. – In the case of Robert Emmet, treat all material prior to his involvement with the United Irishmen as background. ESAY PLAN: SAME AS ABOVE EXCEPT FROM the REVOLUTIONARY LEADER’S POINT OF VIEW B – A factory/mine owner during the Industrial Revolution in Britain, c. 1850. – If the answer is exclusively from the perspective of the factory worker, Max CM = 8 Max OM =0.ESSAY PLAN: (*** YOU are the factory owner) – NAME the factory/ mine owner – STATE what type of factory/ mine you own – NAME the part of England your factory is in – DESCRIBE what your factory produces and where you sell/ exports your goods – NAME & DESCRIBE how and where you get your raw materials i. e. coal, water-power etc. – NAME the inventions that you use in your factory – DE SCRIBE how you transport your raw materials INTO your factory and how you transport your goods OUT of your factory – DESCRIBE the workers who work in your factory, what hours they work, their working conditions and pay. DESCRIBE the living conditions of your workers and HOW you have attempted to make their lives better – STATE what hobbies or leisure activities you like i. e. gambling, betting on bare-knuckle fights etc. A factory/ mine worker during the Industrial Revolution (As above EXCEPT from the WORKER’S PERSPECTIVE) B – A named leader in Irish independence struggle, 1916-1923. – No marks for the leader’s name. – Background material i. e. pre-1916 = 1 SRS; Post-1923 material = 1 SRS. ESSAY PLAN: – STATE where and when the leader was born – STATE the background of the leader i. e. education/ work etc. NAME the organisation that the leader joined and WHEN – NAME other people who the leader was associated with – STATE the political beliefs of this leader – STATE & DESCRIBE what role the leader played in the Irish Independence struggle e. g. Minister for Finance in the 1st Dail N. B. ** – STATE whether or not this leader was part of the Sinn Fein delegation to London for the Anglo-Irish Treaty Negotiations of 1921 – STATE whether this leader was PRO-TREATY or ANTI-TREATY in 1922/ 1923 – GIVE THEIR REASONS for being PRO-TREATY or ANTI-TREATY – DESCRIBE the rest of the leader’s careerSection 5 Long Document Question (30 marks) – Famine, Emigration & De-population in 19th Century Ireland (2004) – Exploration, Vespucci & Impacts on Indigenous Populations (2005) – Famine, Emigration & De-Population in 19th Century Ireland (2006) – Reformation, Papal Bull & Counter-Reformation (2007) – French & Irish Revolutions in 18th Century (2008) – Plantations in 17th Century Ireland (2009) – Exploration, Spani sh & Portuguese (2010) – Rural Ireland & Industrial England in the 19th Century (2011) Structure of Question: Part A – Answers derived from 1st Source. USE QUOTATIONS & EVIDENCE from Source (8-10 marks)Part B – Answers derived from 2nd/ 3rd Sources USE QUOTATIONS & EVIDENCE from Source or Contextual/ Background Information require on topic (8 – 10 marks) Part C – Answer ONE from 3 Options Contextual/ Background Information required on topic (10 – 12 marks) Part C: Usually requires a short paragraph answer worth 10 or 12 marks. It is important that you write at length on whatever topic you are asked e. g. ‘Problems faced by Irish Immigrants abroad’ or the ‘Counter-Reformation in Europe’.Ensure that you have at least 5 – 6 clear points of information on each of the following topics: (next page) (Check the relevant webpages on the History site under Junior Certificate History for examples of these) Part C Exampl es: †¢ Counter-Reformation †¢ Consequences of the Reformation for Ireland †¢ Urbanisation, Health, Lifestyle & Pastimes of Industrial England †¢ Impact of Famine & Problems faced by Immigrants abroad †¢ Conflict between European Powers as a consequence of Exploration †¢ Impacts on indigenous Populations by Explorations †¢ Religious, Political & Cultural Impacts of Plantations in Ireland Brehon Law, Language & Customs †¢ Causes & Impacts of French, American & Irish Rebellions/ Revolutions †¢ Reign of Terror Section 6 (60 marks) Do two options from (A), (B), (C) and (D). (2 x 30 marks) Political Developments in 20th Century Ireland Question divided into 2 or 3 parts: short questions followed by 10 or 12 mark questions. The ten mark questions to be prepared are as follows: – 1) Home Rule Crisis 1912 – 1914 2) 1916 Rising 3) 1918 General Election 4) War of Independence 1919 – 1921 5) Anglo-Irish Treaty 1921 (& split in Si nn Fein) 6) Irish Civil War 1922 – 1923 7) Cumann na Gaedheal Government 1923 – 1932 ) DeValera & ‘Dismantling the Treaty’ 1932 – 1938 9) The ‘Emergency (neutrality) 1939 – 1945 10) The 1st Inter-Party Government 1948 – 1951 11) 1950’s Ireland 12) Sean Lemass & 1960’s Ireland (1st Programme for Economic Expansion) – Also Northern Ireland 1) N. Ireland during WWII 2) Civil Right Movement in late 1960’s 3) The ‘Troubles’ For key terms and short questions, check the webpage ‘Political Developments in 20th Century Ireland’ on the History website under Junior Cert. History International Relations in the 20th Century Question divided into 2 or 3 parts: short questions followed by 10 or 12 mark questions.Ten mark questions to be prepared are as follows: 1) Lenin & Russian Revolution 1917 2) Treaty of Versailles 1919 3) Mussolini’s Italy 4) Nazi Rise to Power 1927 – 1933 5) Nazi Germany 1933 – 1939 (Totalitarianism & Propaganda) 6) Hitler’s Foreign Policy 1933 – 1939 7) World War II 8) The Cold War: a) Berlin Blockade b) Korean War c) Cuban Missile Crisis For key terms and short questions, check the webpage ‘International Relations in the 20th Century’ on the website under Junior Cert. History ———————– Reformation Rural Ireland, Famine & Industrial England in 19th Century Age of Exploration Plantations Age of Revolutions

Autism And Its Effects On Children - 1205 Words

What is Autism? Autism also specified as Autistic Spectrum Disorder, ASD, Pervasive Developmental Disorder (PDD), Childhood Autism (ICD-10), Autistic Disorder (DSM-IV), Atypical Autism (ICD-10), PDD not otherwise specified (PDD-NOS), Asperger Syndrome†¨(ICD- 10)/Asperger Disorder (DSM-IV), is a series of developmental disabilities that cause substantial impairments in social interaction, as well as difficulties in nonverbal interactions and behavioral challenges. From the early 1900s, autism has been pertained to a range of neuropsychological conditions and has been in use for about 100 years. In which it still does today, the word autism comes from the Greek word autos, meaning self which describes conditions in which a person is detached from social interaction or an isolated self. (A history of autism, 2005). Psychiatrist Eugen Bleuler was the first person to use the term to describe the behavior of some of his patients and it wasn t until 1938 that autism was first studied i n depth to where it s modern meaning (Jevtic, 2015). Autism is a result of a neurological disorder that has an effect on normal brain function, causing many people with ASD to seek more help in their daily lives where others might seek for less. Autism is also known as a wide-spectrum disorder which means there is not just one type of autism but there are several. Because this disease is widespread, not everyone with autism carry the same symptoms. Someone with ASD can dev which means thereShow MoreRelatedThe Effects Of Autism On Children With Autism3085 Words   |  13 PagesWhat is autism? To some people it can mean many different things. Autism Spectrum Disorders are a range of intense developmental disorders that can cause problems with an individuals’ thinking, feeling, language, and the ability to relate to others. 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