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Question

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. 


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)


Chemistry

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