The reaction CaCO3 ⇌CaO +CO2 in a lime kiln goes to completion because

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It is a heterogeneous reaction

Backward reaction is very slow

CO2 formed escapes out

KC (or) Kp has no units

answer is C.

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Detailed Solution

cannot be a reversible if carried out in a lime kiln (open vessel) because CO2 formed escapes out and backward reaction is not possible.

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