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For the reactions : I: CaCO(3)(s)hArr ...

For the reactions `:`
`I: CaCO_(3)(s)hArr CaO(s)+CO_(2)(g),P_(CO_(2))=2 "atm"`
`II: CO_(2)+C(s)hArr 2CO_(g),K=6 "atm"`
Hence, equilibrium constant, `K_(p)` ( in the same units ) for the reaction
`CaCO_(3)(s)+C(s)hArr CaO(s)+2CO(g)` is

Text Solution

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The correct Answer is:
12
I. ` CaCO_(3) (s) hArr Ca O (s) + CO_(2) (g)`
`K_(p) = p _(CO_(2)) = 2 atm`
II. ` CO_(2) (g) + C(s) hArr 2 CO (g) K._(p) = 6 atm`
For the equilibrium
`CaCO_(3) (s) + C (s) hArr CaO (s) + 2 CO (g)`
Add eqn. I and II
`K_(p) = p_(CO_(2)) = K_(p) xx K_(p) = 2 xx 6 = 12 `
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