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For the reaction `CO (g) + (1)/(2) O_(2) (g) rarr CO_(2) (g)` `Delta H` and `Delta S` are `-283 kJ` and `-87 J K^(-1)`, respectively. It was intended to carry out this reaction at 1000,1500,3000, and 3500 K. At which of these temperatures would this reaction be thermodynamically spontaneous?A. 1500 and 3500 KB. 3000 and 3500 KC. 1000, 1500 and 3000KD. 1500, 3000 and 3500 K |
Answer» Correct Answer - C `DeltaG=DeltaH-TDeltaS` At 1000 K, `DeltaG=-283-(-1000xx0.087)`(Spontaneous) `=-196kJ` AT 1500K `DeltaG=-283-(-1500xx0.087)` (spontaneous) `=-152.5kJ` At 3000 K, `DeltaG=-283-(-3000xx0.087)` (spontaneous) `=-22kJ` At 3500 K, `DeltaG=-283-(-3500xx0.087)` (Non-spontaneous) =`+21.5kJ` |
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