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NSWChemistryQuick questions
Module 7: Organic Chemistry
Quick questions on Alcohols, oxidation and hydration of alkenes explained: HSC Chemistry Module 7
7short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What are combustion of alcohols?Show answer
Like hydrocarbons, alcohols burn in excess oxygen to and water:
What is solubility in water?Show answer
Methanol, ethanol, propan-1-ol and propan-2-ol are fully miscible with water. From butanol onwards, solubility drops sharply because the non-polar alkyl tail dominates. By octan-1-ol, the alcohol is essentially insoluble.
What is viscosity?Show answer
Increases with chain length and with the number of OH groups (compare ethanol with ethane-1,2-diol or with glycerol).
What is markovnikov direction in hydration?Show answer
Propene plus water gives propan-2-ol (secondary), not propan-1-ol.
What is q1?Show answer
Classify each of the following as primary, secondary or tertiary: butan-2-ol, 2-methylpropan-2-ol, propan-1-ol. [3 marks]
What is q2?Show answer
Calculate the mass of ethanol produced by complete fermentation of 1.00 kg of glucose. [3 marks]
What is q3?Show answer
Propene undergoes hydration with sulfuric acid catalyst. (a) State the Markovnikov product. (b) Write a balanced equation.
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