For the reaction `CO_((g))+(1)/(2)O_(2(g))rarrCO_(2(g)),DeltaH and DeltaS " are "-283 kJ and -87 JK^(-1)`. Respectively. It was intended to carry out this reaction at 1000, 1500, 3000 and 3500 K. At which of these temperature would this reaction be thermodynamically spontaneousA. 1500 and 3500 KB. 3000 and 3500 KC. 1000, 1500 and 3000 KD. 1500, 3000 and 3500 K

For the reaction `CO_((g))+(1)/(2)O_(2(g))rarrCO_(2(g)),DeltaH and Del

1.	For the reaction `CO_((g))+(1)/(2)O_(2(g))rarrCO_(2(g)),DeltaH and DeltaS " are "-283 kJ and -87 JK^(-1)`. Respectively. It was intended to carry out this reaction at 1000, 1500, 3000 and 3500 K. At which of these temperature would this reaction be thermodynamically spontaneousA. 1500 and 3500 KB. 3000 and 3500 KC. 1000, 1500 and 3000 KD. 1500, 3000 and 3500 K
Answer» Correct Answer - C `DeltaG=DeltaH-TDeltaS` For spontaneous reaction `DeltaG` should be negative When T=1000 K, `DeltaG`=(-283 -1000 `xx` 0.087) kJ =-370 kJ When `T=1500 K, DeltaG=(-283-1500xx0.087) kJ =-413.5 kJ` `T=3000 K, DeltaG=(-283-3000xx0.087) kJ=-544 kJ` When `T=3500 K, DeltaG=(-283-3500xx0.087) kJ=+21.5 kJ` Hence at 3500 K, reaction will be non-spontaneous.

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