Sulphur dioxide gas gets evolved when HCl acid is added to sodium thiosulphate.
Na2S2O3 + 2HCl †’ 2NaCl + H2O + SO2 + S
Sulphur dioxide gas gets evolved when HCl acid is added to sodium thiosulphate.
Na2S2O3 + 2HCl †’ 2NaCl + H2O + SO2 + S
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