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The values of H and S for a reaction are respectively 30 kJ mol-1 and 100 kJ mol-1 . Then the temperature above which the reaction will become spontaneous is ……(a) 300 K (b) 30 K (c) 100 K (d) 20°C |
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Answer» (a) 300 K ∆G = ∆H – T∆S At 300 K. ∆G = 30000 J mol-1 – 300 J mol-1 x 100 J K mol-1 ∆G = 0 above 300 K; ∆G will be negative and reaction becomes spontaneous. |
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