1.

The values of `DeltaH` and `DeltaS` for the reaction, `C_("graphite")+CO_(2)(g)rarr2CO(g)` are `170KJ` and `170JJK^(-)` respectively. This reaction will be spontaneous atA. 710 KB. 910 KC. 1110 KD. 510 K

Answer» Correct Answer - C
Given , `DeltaH=170 KJ =170xx10^(3)` J
`DeltaS=170 JK^(-1), T=?`
`DeltaG=DeltaH-TDeltaS`
For spontaneous reaction
`DeltaG lt 0 implies 0 lt 170 xx 10^(3) -Txx170, T gt 1000`
`therefore T=1110` K


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