Refer to above diagram. Select the incorrect statement at 1000oC. Given2D+O2→2DO,ΔG⊖=−370kJ2C+O2→2CO,ΔG⊖=−470kJ
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a
Reduction of DO is possible by C and metals are obtained in vapour state.
b
Reduction of DO is not possible by C
c
For reaction DO+C→D+CO,ΔGΘ=+50kJ
d
Metal C has more affinity for O2 as compared to D.
answer is B.
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Detailed Solution
Correct (2) Reduction of DO is possible by C.Correct (3) At 1000"C , ∆G⊝ is more negative for C, so that given reaction is possible.2DO + 2C → 2CO + 2D(g)∆G⊝ = -470 - (-370) : -100 kJ.