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Question

Match List I with List II and select the answer from the given codes
List I List II
A. C(s)+O2(g)CO2(g) 1. ΔH=ΔU+RT
B. N2(g)+3H2(g)2NH3(g) 2. ΔH=ΔU
C. NH4HS(s)NH3(g)+H2S(g) 3. ΔH=ΔU2RT
D. PCl5(g)PCl3(g)+Cl2(g) 4. ΔH=ΔU+2RT
E. 2SO2(g)+O2(g)2SO3(g) 5. ΔH=ΔURT

A
A-1, B-2, C-3, D-4, E-5
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B
A-5, B-2, C-3, D-4, E-1
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C
A-1, B-3, C-4, D-2, D-5
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D
A-2, B-3, C-4, D-1, E-5
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Solution

The correct option is D A-2, B-3, C-4, D-1, E-5
As we know,
ΔH=ΔU+ΔnRT
C(s)+O2(g)CO2(g)
Δn=0 so ΔH=ΔU
N2(g)+3H2(g)2NH3(g)
Δn=0 so ΔH=ΔU2RT
NH4HS(s)NH3(g)+H2S(g)
Δn=+2 so ΔH=ΔU+2RT
PCl5(g)PCl3(g)+Cl2(g)
Δn=1 so ΔH=ΔU+RT
2SO2(g)+O2(g)2SO3(g)
Δn=1 so ΔH=ΔURT

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