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CBSE Class 12-science Answered

A white turbidity is obtained by passing H2S in aq. soln of SO2. Why?
Asked by Sakshi Singh | 24 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 | 25 Sep, 2013, 08:45: AM
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