Test for Cations(sodium hydroxide)

Question 1

What do u get after adding aqueous sodium hydroxide in ammonium

Answer 1

Ammonia gas is produced during warming

Question 2

What do u get after adding aqueous sodium hydroxide in calcium and in excess aqueous sodium hydroxide

Answer 2

A white precipitate is formed , insoluble in excess sodium hydroxide.

Question 3

What do u get after adding aqueous sodium hydroxide in copper(ll) and in excess aqueous sodium hydroxide.

Answer 3

A light blue precipitate which is insoluble in excess sodium hydroxide.

Question 4

What do u get after adding aqueous sodium hydroxide in iron(ll) and in excess aqueous sodium hydroxide.

Answer 4

A green precipitate which is insoluble in excesss sodium hydroxide

Question 5

What do u get after adding aqueous sodium hydroxide in iron(lll) and in excess aqueous sodium hydroxide.

Answer 5

A reddish-brown precipitate which is insoluble in excess sodium hydroxide.

Question 6

What do u get after adding aqueous sodium hydroxide in lead(ll) and in excess aqueous sodium hydroxide.

Answer 6

A white precipitate which is soluble in excess giving a colourless solution.

Question 7

What do u get after adding aqueous sodium hydroxide in zinc and in aqueous sodium hydroxide.

Answer 7

A white precipitate which is soluble in excess aqueous sodium hydroxide giving a colourless solution.