Question

A strip of metal X is dipped in a blue coloured salt solution YSO₄ . After some time, a layer of metal Y from the salt solution is formed on the surface of metal strip X. Metal X is used in galvanisation whereas metal Y is used in making electric wires. Metal X and metal Y together form an alloy Z. 

(a) What could metal X be ? 

(b) What could metal Y be ? 

(c) Name the metal salt YSO . 

(d) What type of chemical reaction takes place when metal X reacts with salt solution YSO₄ ? Write the equation of the chemical reaction involved. 

(e) Name the alloy Z. 

Answer 1

(b) Copper (Cu) 

(c) Copper sulphate (CuSO₄) 

(d) Displacement reaction; CuSO₄ (aq) + Zn (s) ZnSO₄ (aq) + Cu (s) 

(e) Brass