JEE Main2014Chemistryd and f Block ElementsActual

Which of the following is not formed when H 2 S reacts with acidic K 2 Cr 2 O 7 solution ?

Options

AK 2 SO 4
BCr 2 ( SO 4 ) 3
CS
DCrSO 4

Correct answer

D. CrSO 4

Step-by-step solution

The Reaction is K 2 Cr 2 O 7 + 4 H 2 SO 4 → K 2 SO 4 + Cr 2 SO 4 3 + 4 H 2 O + 3 O 3 O + 3 H 2 S → 3 H 2 O + 3 S _______________________________________________________________________ K 2 Cr 2 O 7 + 4 H 2 SO 4 + 3 H 2 S → K 2 SO 4 + Cr 2 SO 4 3 + 7 H 2 O + 3 S CrSO 4 is not formed

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