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Calculate the pressure of CO (2) gas at...

Calculate the pressure of `CO _(2) ` gas at 700 K in the heterogeneous equilibrium reaction `Ca CO _(3) (s) hArr CaO (s) + 2 CO _(2) (g) if Delta G ^(@)` for the reaction is `130.2 kJ mol ^(-1).`

Text Solution

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Here `K _(P) = P _(CO _(2)) . Delta G ^(@) =- RT ln K _(P)`
`ln K _(P) = -( Delta G ^(@))/( RT) =- ( 130 .2 2 xx 10 ^(3 ) J mol ^(-1))/( ( 8. 314 JK ^(-1) mol ^(-1)) ( 700 K)) implies P _(CO _(2))= K _(P) = 5. 178 xx 10 ^(-9) atm`
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