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What is the relation between K(P) and K(...

What is the relation between `K_(P)` and `K_(C)`, Give one example for which `K_(P)` is equal to `K_(C)`,

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The relation between `K_(P)` and `K_(C)` is `K_(P)=K_(C)(RT)^((Deltan_(g)))`
`K_(P)` = equilibrium constant is terms of partial pressure
`K_(c)` = equilibrium constant is terms of concentration
R = gas constat
T = Temperature
`Deltan_(g)` = Difference between the sum of the number of moles of products and the sum of number of moles of products and the sum number of moles of reactants in the gas phase
When `Deltan_(g)=0`
`K_(P)=K_(C)(RT)^(0)=K_(C)" ie",K_(P)=K_(C)`
Example : `H_(2)(g)+I_(2)(g)hArr2HI(g)`
`Deltan_(g)=2-2=0`
`:.K_(P)=K_(C)` for the synthesis of HI
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