Why does sulphur dioxide gas evolved when HCl gas is added to Sodium thiosulfate?
Reaction of Hydrochloric acid and Sodium thiosulfate:-
Na2S2O3(aq)Sodiumthiosulphate+2HCl(aq)Hydrochloricacid→2NaCl(aq)Sodiumchloride+H2O(l)Water+SO2(g)Sulphurdioxide+S(s)Sulphur
(a) Name the acid formed when sulphur dioxide dissolves in water.
(b) Name the gas released when sodium carbonate is added to a solution of sulphur dioxide.
(a) Name a metal for each case: (i) it does not react with cold as well as hot water but reacts with steam. (ii) It does not react with any physical state of water.
(b) When calcium metal is added to water, the gas evolved does not catch fire but the same gas evolved on adding sodium metal to water catches fire. Why is it so?
Sulphur dioxide gas gets evolved when HCl acid is added to: