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Question

In the reaction given below, 1 mol of CrO5 will liberate how many moles of O2?
CrO5+H2SO4Cr2(SO4)3+H2O+O2

A
52
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B
54
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C
92
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D
None of the above
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Solution

The correct option is D None of the above
The balanced reaction is as follows:
2CrO5+3H2SO4Cr2(SO4)3+3H2O+72O2
2 3 1 3 72
2 mol of CrO5 liberates 72 mol of O2.
1 mol CrO5 liberates 74 mol of O2.

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