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  • The incorrect expression among the following is :Option: 1 <img alt="\mathrm{\frac{\Delta G_{system}}{\Delta S_{total}}= -T}" src="https://entranceco

The incorrect expression among the following is :

Option: 1

\mathrm{\frac{\Delta G_{system}}{\Delta S_{total}}= -T}


Option: 2

In isothermal process

\mathrm{W_{reversible}= -nRT ln\frac{V_f}{V_i}}


Option: 3

\mathrm{ln K = \frac{\Delta H^0-T \Delta S^0}{RT}}


Option: 4

\mathrm{K= e^{-\Delta G^0/RT}}


Answers (1)

best_answer

As we learnt,

\mathrm{\Delta G^{\circ}= -RTlnK}

and \mathrm{\Delta G^{\circ}=\Delta H^{\circ}-T\Delta S^{\circ}}

Thus, we can write

\mathrm{\Delta H^{\circ}-T\Delta S^{\circ}= -RTlnK}

\mathrm{lnK= -\left ( \frac{\Delta H^{\circ}-T\Delta S^{\circ}}{RT}\right )}

Hence, option (3) is correct

Posted by

avinash.dongre

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