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  • A reaction, A + B gives C + D + q is found to have a positive entropy change. The reaction will be (i) possible at high temperature (ii) possible only at low temperature (iii) not possible at any temperature (v) possible at any temperature

6.6   A reaction, A + B \rightarrow C + D + q is found to have a positive entropy change. The reaction will be
         (i) possible at high temperature
        (ii) possible only at low temperature
        (iii) not possible at any temperature
         (v) possible at any temperature

Answers (1)

best_answer

For the reaction to be feasible the \Delta G should be negative
\Delta G = \Delta H - T\Delta S

According to question,
\Delta S = positive unit
\Delta H = negative (as heat is evolved in the reaction)
Overall the \Delta G is negative.

Therefore the reaction is possible at any temperature. So, the correct option is (iv)

Posted by

manish

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