Question

Question-1:
Write the methods A, B, C, D and E that are generally used for preparing the chlorides listed below from (i) to (v).
(A) Action of acid on a metal
(B) Action of an acid on an oxide (or) carbonate
(C) Direct combination
(D) Neutralization of an alkali by an acid
(E) Precipitation (double decomposition)

(i) Copper (II) chloride
(ii) Iron (II) chloride
(iii) Iron (III) chloride
(iv) Lead (II) chloride
(v) Sodium chloride
Each method is to be used only one.

Answer 1

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Answer 2

The methods that are generally used for preparing the chlorides are:

(i) Copper (II) chloride - (C) Direct combination.

Cu + Cl2 → CuCl2

(ii) Iron (II) chloride - (A) The action of acid on a metal.

Fe + 2 HCl → FeCl2 + H2

(iii) Iron (III) chloride - (B) The action of acid on an oxide (or) carbonate.

Fe2O3 + 6 HCl → 2 FeCl3 + 3 H2O

(iv) Lead (II) chloride - (E) Precipitation (double decomposition).

Pb(NO3)2 + 2 NaCl → PbCl2 + 2 NaNO3

(v) Sodium chloride - (D) Neutralization of alkali by an acid.

NaOH + HCl → NaCl + H2O