1. Three tests were carried out on the filtrate. 

Complete the observations for each test.

The filtrate from (a) was divided into three approximately equal portions.

i)

Test 1: To the first portion were added drops of aqueous sodium hydroxide, a little at a time with shaking.

Observations: ...........................................................................................................................

[2]

Excess aqueous sodium hydroxide was added.

Observations:...........................................................................................................................

[1]

ii)

Test 2: To the second portion was added excess aqueous ammonia a little at a time.

Observations: ...........................................................................................................................

[3]

Test 3 : To the third portion were added drops of dilute hydrochloric acid and aqueous barium chloride.

Observations: white precipitate