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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)hArrCaO(s)+CO_(2)(g)`
For this equilibrium, the correct statement (s) is/are

A

`DeltaH ` is dependent on T

B

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

C

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

D

`Delta H` is independent of the catalyst , ifany

Text Solution

Verified by Experts

The correct Answer is:
A, B, D
`Delta H` is dependent on . `Delta H` varies with temperature according to Kirchoff's equation . Hence , (a) is correct .
Equilibrium constant of a reactiondepends only on temperature and is independent of the amount of `CaCO_(3)` Hence, (b) is correct .
For the given reaction , ` K = p_(CO_(2))` at given Thus, K is independent of pressure . Hence , ( c) is incorrect.
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The thermal dissociation equilibrium of CaCO_(3)(s) is strudied under different conditions CaCO_(3)(s)hArrCaO(s)+CO_(2)(g) For this equilibrium, the correct statements are (i) K is dependent on the pressure of CO_(2) at a given T. (ii) Delta H is dependent on T. (iii) Delta H is independent of the catalyst, if any. (iv) K is independent of the inintial amount of CaCO_(3) .

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