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Question

2H2O2(l)2H2O(l)+O2(g)
For this reaction relate ΔH and ΔU.

A
ΔH =ΔU
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B
ΔH > ΔU
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C
ΔH < ΔU
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D
None of these
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Solution

The correct option is D ΔH > ΔU
As we know,
ΔH =ΔU+ΔngRT
here,
2H2O2(l)2H2O(l)+O2(g)
Δng=1
so,
ΔH > ΔU

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