X, Y and Z are three crystalline solids that are soluble in water and have a common anion. To help you to identify X, Y and Z, you are provided with the following experimental observations. A reddish-brown gas is obtained when X, Y and Z are separately warmed with concentrated sulphuric acid and copper turnings added to the mixture.
Analysis of given conditions:
Chemical reactions involved:
(Nitrate ion) (Bisulphate ion) (Reddish-brown gas)
(Potassium (Potassium
nitrate) nitrite)
(Lead nitrate) (Lead oxide) (Nitrogen dioxide)
(Ammonium (Sodium (Sodium (Ammonia)
nitrate) hydroxide) nitrate)
Hence, X is Potassium nitrate(), Y is Lead nitrate(), and Z is Ammonium nitrate(