Write a fully balanced equation for — Magnesium nitride is treated with warm water.

Study the flow chart given and give balanced equations to represent the reactions A, B and C.

$\text{Mg}$3\text{N}2 \xrightarrow{\text{A}} \text{NH}3 \xtofrom[\text{C}]{\text{B}} \text{NH}4\text{Cl}

(a) Ammonia reacts with excess chorine to form …………… (nitrogen / nitrogen trichloride / ammonium chloride).

(b) Give a balanced equation: Ammonium hydroxide is added to ferrous sulphate solution.

(c) Write observations: Ammonia gas is passed over heated copper (II) oxide.

Identity the substances 'Q' based on the information given — The white crystalline solid 'Q' is soluble in water. It liberates a pungent smelling gas when heated with sodium hydroxide solution.