Write balanced equations for the reaction of dilute hydrochloric acid with each of the following :
(a) iron,
(b) sodium hydrogen carbonate,
(c) iron(II) sulphide,
(d) sodium sulphite,
(e) sodium thiosulphate solution.

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Solution

(a) $F e_{(} s) + 2 H C l_{(} a q) \to F e C l_{2} (a q) + H_{2} (g)$

(b) $N a H C O_{3} (s) + H C l (a q) \to N a C l (a q) + C O_{2} (g) + H_{2} O (l)$

(c) $F e S (s) + 2 H C l (a q) \to F e C l_{2} (a q) + H_{2} S (g)$

(d) $N a_{2} S O_{3} (s) + H C l (a q) \to N a C l (a q) + S O_{2} (g) + H_{2} O (l)$

(e) $N a_{2} S_{2} O_{3} (a q) + 2 H C l (a q) \to 2 N a C l (a q) + S (s) + S O_{2} (g) + H 2 O (l)$

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Write balanced equations for the reaction of dilute hydrochloric acid with each of the following : (a) iron, (b) sodium hydrogen carbonate, (c) iron(II) sulphide, (d) sodium sulphite, (e) sodium thiosulphate solution.

(a) Fe(s)+2HCl(aq)→FeCl2(aq)+H2(g) (b) NaHCO3(s)+HCl(aq)→NaCl(aq)+CO2(g)+H2O(l) (c) FeS(s)+2HCl(aq)→FeCl2(aq)+H2S(g) (d) Na2SO3(s)+HCl(aq)→NaCl(aq)+SO2(g)+H2O(l) (e) Na2S2O3(aq)+2HCl(aq)→2NaCl(aq)+S(s)+SO2(g)+H2O(l)

Write balanced equations for the reaction of dilute hydrochloric acid with each of the following :
(a) iron,
(b) sodium hydrogen carbonate,
(c) iron(II) sulphide,
(d) sodium sulphite,
(e) sodium thiosulphate solution.