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Following data is given for the reacson,...

Following data is given for the reacson,
`CaCO_(3(s))toCaO_((s))+CO_(2(s))` `Delta_(f)H^(@)[CaO_((s))]=-650.0" kJ mol"^(-1)`
`Delta_(f)H^(@)[CO_(2(g))]=-395.9" kJ mol"^(-1)`
`Delta_(f)H^(@)[CaCO_(3(s))]=-1206.9" kJ mol"^(-1)`
Predict the effect of temperature on the equilibrium constant of the above reaction.

Text Solution

Verified by Experts

`CaCO_(3(s))toCaO_((s))+CO_(2(s))`
`Delta_(f)H^(@)=Delta_(f)H^(@)[CaO_((s))]+Delta_(f)H^(@)[CO_(2(g))]-Delta_(f)H^(@)[CaCO_(3(s))]`
`Delta_(f)H^(@)=-650+(395.9)-(-1206.9)`
`=+161" kJ mol"^(-1)`
Because `DeltaH` value is positive so the reaction is endothermic. Hence, according to Le-Chatelier's Principle, reaction will proceed in forward direction on increasing temperature.
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