19.1 Exercise 19

Predict the products of the following reactions and balance the equations.

(a) Zn is added to a solution of Cr₂(SO₄)₃ in acid.

(b) FeCl₂ is added to a solution containing an excess of $\text{Cr}_{2} \text{O}_{7} ^{2−}$ in hydrochloric acid.

(c) Cr²⁺ is added to $\text{Cr}_{2} \text{O}_{7} ^{2−}$ in acid solution.

(d) Mn is heated with CrO₃.

(e) CrO is added to 2HNO₃ in water.

(f) FeCl₃ is added to an aqueous solution of NaOH.