Draw the displayed formula of methanal.

Important Questions on Carbonyl Compounds

HARD

AS and A Level

IMPORTANT

Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 18 - Carbonyl Compounds>Question>Q 2

Write a balanced equation for the oxidation of ethanol to ethanal, using $\left[\mathrm{O}\right]$to represent an oxygen atom from the oxidising agent.

MEDIUM

AS and A Level

IMPORTANT

Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 18 - Carbonyl Compounds>Question>Q 2

Give practical details to explain how you would use the reaction oxidation of ethanol to ethanal, to prepare and collect a sample of ethanal.

MEDIUM

AS and A Level

IMPORTANT

Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 18 - Carbonyl Compounds>Question>Q 2

Write a balanced equation for the oxidation of butan-$2$-ol to butanone, using $\left[\mathrm{O}\right]$to represent an oxygen atom from the oxidising agent. 

MEDIUM

AS and A Level

IMPORTANT

Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 18 - Carbonyl Compounds>Question>Q 2

What do you observe in the reaction vessel if the oxidising agent i.e. potassium dichromate (VI) used in the oxidation of ethanol to ethanal reaction is acidified with dilute sulphuric acid, and the reaction mixture is heated?

MEDIUM

AS and A Level

IMPORTANT

Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 18 - Carbonyl Compounds>Question>Q 2

The butanone does not have to be distilled off as it forms in the reaction vessel because _____.

HARD

AS and A Level

IMPORTANT

Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 18 - Carbonyl Compounds>Question>Q 3

Write a balanced equation for the reaction that takes place when proapanal is warmed with an aqueous alkaline solution of sodium tetrahydridoborate, using the symbol $\left[\mathrm{H}\right]$to represent a hydrogen atom from the reducing agent. 

HARD

AS and A Level

IMPORTANT

Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 18 - Carbonyl Compounds>Question>Q 3

Name the product formed in the reduction reaction if pentan-$3$-one is added to lithium tetrahydridoaluminate in dry ether.

MEDIUM

AS and A Level

IMPORTANT

Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 18 - Carbonyl Compounds>Question>Q 4

Name the organic product that would be formed in the nucleophilic addition of $\mathrm{HCN}$ to ethanal.