Question

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 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

Answer 1

Correct Answer - 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.