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 YSO4
(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.
(a) Zn undergoes displacement reaction and is also used for galvanization. The evidences suggest that metal X is Zinc (Zn).
(b) Copper is more reactive than Zn and displaces it while interacting. Copper is also used in making electric wires. These evidences suggest that metal Y is Copper (Cu)
(c) Copper sulphate (CuSO4) is named as YSO4.
(d) Displacement reaction is taking place. In a displacement reaction, more reactive element displaces a lesser reactive element from its salt solution.
CuSO4 (aq) + Zn (s) → ZnSO4 (aq) + Cu (s)
(e) Brass
