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Equilibrium constant K(p) for the reacti...

Equilibrium constant `K_(p)` for the reaction `CaCO_(3)(s) hArr CaO(s) + CO_2(g)` is 0.82 atm at `727^@C`.
If 1 mole of `CaCO_(3)` is placed in a closed container of 20 L and heated to this temperature, what amount of `CaCO_(3)` would dissociate at equilibrium?

A

0.2 g

B

80 g

C

20 g

D

50 g

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The correct Answer is:
C
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