1.

If DeltaG^(@) for the reaction given below is 1.7 kJ, the equilibrium constant of the reaction, 2HI(g) hArr H_(2)(g)+I_(2)(g) at 25^(@)C, is

Answer»

0.5
2
3.9
24

Solution :`DELTAG^(@)=-2.303RTlogK`
GIVEN, `DeltaG^(@)=1.7kJ`
`T=25^(@)C=25+273=298K`
`therefore1.7=-2.303xx8.314xx10^(-3)xx298xxlogK`
`LOGK=-(1.7)/(2.303xx8.314xx10^(-3)xx298)`
`thereforeK=0.5`


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