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What happens when H2S reacts with acidified K2Cr2O7 solution?

Answer»

When H2S reacts with acidic K2Cr2O7 solution, then K2Cr2O7 reduced into chromic sulphate(green colour) obtained solution is green.

K2Cr2O7 + H2SO4 + 3SO2 → K2SO4 + Cr2(SO4)3 + H2O



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