Question

State observation for each of the following :

i. Excess ammonium hydroxide solution is added to lead nitrate solution.

ii. Bromine vapors are passed into a solution of ethyne in carbon tetrachloride.

iii. A zinc granule is added to copper sulphate solution.

iv. Zinc nitrate crystals are strongly heated.

v. Sodium hydroxide solution is added to ferric chloride solution at first a little and then in excess

Answer 1

(i) A white ppt. of lead hydroxide

(ii) A colorless solution is obtained and brown ***** of bromine vapors disappear.

(iii) A red shiny metal starts precipitating

(iv) A reddish brown gas is liberated.

(v) A reddish brown ppt. of ferric hydroxide is formed which *** insoluble in excess of sodium hydroxide.