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Answer to Question #6253 in Inorganic Chemistry for Ryan

Question #6253
Hello, We know that Sodium Chorite when acidified produces chlorine dioxide, but does Sodium Choride also produce a gas when acidified? Thanks!
Expert's answer
Sodium Chorite is a salt of a weak Chlorous acid. The pure substance is unstable:
4*HClO2 = HCl + HClO3 + 2*ClO2 + H2O
Sodium Chorite and Sulphuric acid reaction:
4*NaClO2 + 2*H2SO4 = 2*Na2SO4 + HCl + HClO3 + 2*ClO2 + H2O

Sodium Choride also produce a gas when acidified, but only by more strong acid, than Hydrochloric acid:
NaCl + H2SO4 → NaHSO4 + HCl(gas)

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