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.

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Solution

(a) Metal X is zinc.

(b) Metal Y is copper.

(c) Metal salt YSO₄ is copper sulphate.

(d) Displacement reaction takes place. The chemical equation is given as follows:
Zn (s) + CuSO₄(aq) → ZnSO₄(s) + Cu (s)

(e) The alloy is brass.

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(a) Metal X is zinc. (b) Metal Y is copper. (c) Metal salt YSO4 is copper sulphate. (d) Displacement reaction takes place. The chemical equation is given as follows: Zn (s) + CuSO4 (aq) → ZnSO4 (s) + Cu (s) (e) The alloy is brass.

(a) Metal X is zinc.

(b) Metal Y is copper.

(c) Metal salt YSO₄ is copper sulphate.

(d) Displacement reaction takes place. The chemical equation is given as follows:
Zn (s) + CuSO₄(aq) → ZnSO₄(s) + Cu (s)

(e) The alloy is brass.