Question

Intext : What happens when H2S is passed into an acidified potassium dichromate solution? 

  • Inorganic Chemistry
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Question

What happens when H2S is passed into an acidified potassium dichromate solution? 

Answer

When H2S is passed into an acidified potassium dichromate (K2Cr2O7) solution, it is oxidized to sulfuric acid (H2SO4) and elemental sulfur (S) is formed.

3H2S (g) + K2Cr2O7 (aq) + 4H2SO4 (aq) → 3S ↓ (s) + Cr2(SO4)3 (aq) + K2SO4 (aq) + 7H2O (l)

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