A white turbidity is obtained by passing H2S in aq. soln of SO2. Why?

Asked by Sakshi Singh | 24th Sep, 2013, 10:54: AM

Expert Answer:

Sulphur dioxide dissolves in water to form sulphurous acid.
SO2 + H2O ? H2SO3
Aqueous solution of SO2 and H2S undergoes redox changes to produce colloidal sulphur as white turbidity.
2H2S + H2SO3 ?3H2O + 3S(Colloidal sulphur)

Answered by Vaibhav Chavan | 25th Sep, 2013, 08:45: AM

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