Question

state the observations
(I) action of concentrated sulphuric acid on hydrated copper sulphate
(ii) Decomposition of lead nitrate
(iii)at anode during electrolysis of lead bromide
(iv)acetylene is passed into bromine water​

Answer 1

1. blue crystals will turn white amorphous

2. reddish brown no2 gas and o2 with pbo

3. reddish brown gas is liberated

4.

Alkalines react in the cold with pure liquid bromine or a solution of bromine In an organic solvent like tetrachloromethane