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The thermal dissociation of equilibrium ...

The thermal dissociation of equilibrium of `CaCO_(3)`(s) is studied under different conditions
`CaCO_(3)(s) rarr CaO(s) + CO_(2)(g)`
For this equilibrium, the correct statement(s) is:

A

`DeltaH` is dependent on `T`

B

`K` is independent of the initial amount of `CaCO_(3)`

C

`K` is dependent on the pressure of `CO_(2)` at a given `T`

D

`DeltaH ` is independent of the catalyst, if any

Text Solution

Verified by Experts

The correct Answer is:
A, B, D
(A) `DeltaH_(2)-DeltaH_(1)=C_(P)_((rxb))(T_(2)-T_(1))`
and `C_(P)` depends on temperature. Hence enthalpy also depends on temperature.
(B) `CaCO_(3_(s))hArrCaO_(s)+CO_(2_((g))) K_(P)=(P_(CO_(2)))_("at equilibrium")`
For a given reaction.
`K_(eq)` depends only on temperature.
(C) `K_(eq)` depends only on temperature.
(D) Enthalpy of reaction is independent of the catalyst. Catalyst generaly changes activation energy.
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