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Consider the following reaction approach...

Consider the following reaction approaching equilibrium at `27^(@)C` and `1` atm pressure
`A+B overset(K_F=10^(3)) underset(K_(b)=10^(2))iff C+D`
The standard Gibb's energy change `(Delta,G^(@))` at `27^(@)C` is `(-)` _________kJ `mol^-1` (Nearest integer).
(Given: `R=8.3JK^(-1)mol^(-1)` and `ln10=2.3)`

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