1.

For the equilibrium reaction : 2H_(2)(g) + O_(2)(g) iff 2H_(2)O(l) at 298 K, DeltaG^(@) = - 474.78 kJ"mol"^(-1). Calculate log K for it. (R = 8.314 J K^(-1) "mol"^(-1)).

Answer»


SOLUTION :`DeltaG^(@) = -2.303 RT"log K`
or `log K = -(DeltaG^(@))/(2.303 RT)`
`DeltaG^(@) = -474.78 kJ "mol"^(-1), R = 8.314 J K^(-1) "mol"^(-1)`
T = 298 K
`therefore log K = (-474.78 xx 10^(3)J"mol"^(-1))/(2..3030 xx 8.314 xx 298)`
` = 83.21` .


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