Alcohols and their reactionsEdexcel International A Level Chemistry: Flashcards

What these 12 flashcards ask

What is the functional group of alcohols and the suffix used for it?
How is a secondary alcohol defined?
Is 2-methylpropan-2-ol primary, secondary or tertiary?
Write the equation for complete combustion of ethanol.
What forms when alcohols burn in limited oxygen?
What is the qualitative test for the –OH group?
Write the equation for ethanol with PCl₅.
How are bromoalkanes made from alcohols?
Write the equation for making HBr from KBr.
How are iodoalkanes made from alcohols?
How is ethene made from ethanol in the laboratory?
Why can butan-2-ol give a mixture of alkenes on dehydration?

Exam questions on Alcohols and their reactions

A technician is given a colourless liquid labelled as propan-2-ol, a solvent used in cleaning products, and wants to confirm that it is an alcohol and then convert it into a halogenoalkane.
The technician adds phosphorus(V) chloride to a sample of the liquid. State what is observed and write the equation for the reaction with propan-2-ol.2 marks
Butan-1-ol, C₄H₉OH, is being investigated as a possible biofuel. Relative atomic masses: C = 12.0, H = 1.0, O = 16.0.
Calculate the mass of carbon dioxide formed when 3.70 g of butan-1-ol burns completely in excess oxygen.2 marks
A chemist makes two different compounds from ethanol, one by a halogenation reaction and one by an elimination reaction, in separate experiments.
Ethanol is converted into bromoethane using potassium bromide and 50% concentrated sulfuric acid. State the conditions, show how the reactive reagent is formed, and write the equation for the reaction of ethanol with that reagent.3 marks

Written by the Exaim team, led by Shaun Daswani (Head of Upper Secondary, Improve ME Institute; MSc Financial Mathematics, Imperial College London; BSc, UCL) and Jason Daswani (operational lead, Improve ME Institute; LSE).