Tollens’ reagent

Question 1

Tollens’ reagent is an

Answer 1

aqueous alkaline solution of silver nitrate in excess ammonia solution

Question 2

Tollen’s reagent is also called

Answer 2

ammoniacal silver nitrate solution

Question 3

Tollen’s reagent When warmed with an aldehyde, the aldehyde is oxidised to a

Answer 3

carboxylic acid and the Ag+ ions are reduced to Ag atoms

Question 4

Tollen’s reagent When warmed with an aldehyde, the aldehyde is oxidised to a in alkaline conditions

Answer 4

conditions, the carboxylic acid will become a carboxylate ion and form a salt

Question 5

The Ag atoms form a

Answer 5

silver ‘mirror’ on the inside of the tube

Question 6

Ketones cannot be oxidised and therefore give ………….. when reacted with tollens

Answer 6

negative

Question 7

The Ag+ ions in Tollens’ reagent are oxidising agents, oxidising the aldehyde to a carboxylic acid and getting reduced themselves to silver atoms