The thermal dissociation equilibrium of CaCO3(s) is studied under different conditionsFor this equilibrium, the correct statement(s) is(are)a)andDelta;H is dependent on Tb)K is independent of the initial amount of CaCO3c)K is dependent on the pressure of CO2 at a given Td)andDelta;H is independent of catalyst, if anyCorrect answer is option 'A,B,D'. Can you explain this answer?

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The thermal dissociation equilibrium of CaCO₃(s) is studied under different conditions

For this equilibrium, the correct statement(s) is(are)

a)
ΔH is dependent on T
b)
K is independent of the initial amount of CaCO₃
c)
K is dependent on the pressure of CO₂ at a given T
d)
ΔH is independent of catalyst, if any

Correct answer is option 'A,B,D'. Can you explain this answer?

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The thermal dissociation equilibrium of CaCO3(s) is studied under diff...

Hence enthalpy depends on temperature.

(C) K_eq depends only on temperature and not on Pressure.
(D) Enthalpy of reaction is independent of the catalyst.
Catalyst generaly changes activation energy.

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The thermal dissociation equilibrium of CaCO3(s) is studied under different conditionsFor this equilibrium, the correct statement(s) is(ar e)

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For certain substances such as ammonium chloride, nitrogen peroxide, phosphorus pentachloride, etc. the measured densities are found to be less than those calculatedfrom their molecular formula. The observed densities decrease towards a limit as thetemperature is raised. This is due to the splitting of the molecules into simpler ones. The process is reversible and is called thermal dissociation.Examples :With increase in the number of molecules, the volume increases (pressure remaining constant) and, in consequence, the density decreases. As the temperature rises, more and more dissociation takes place, and when practically complete dissociation occursthe density reaches its lowest limit.The extent of issociation, ice., the fraction of the total number of molecules which suffers dissociation is called the degree of dissociation. Gas density measurements can be used to determine the degree of dissociation. Let us take by general case where one molecule of a substance A splits up into n molecule of B on heating; i.e.,t = 0 at = teq a x nx Total no. of moles Observed molecular weight or molar mass of the mixtureQ.A sample of mixture of A(g), B(g) and C(g) under equilibrium has a mean molecular weight (observe d) is 80.The equilibrium is Find the degree of dissociation for A(g).

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The thermal dissociation equilibrium of CaCO3(s) is studied under different conditionsFor this equilibrium, the correct statement(s) is(are)a)ΔH is dependent on Tb)K is independent of the initial amount of CaCO3c)K is dependent on the pressure of CO2 at a given Td)ΔH is independent of catalyst, if anyCorrect answer is option 'A,B,D'. Can you explain this answer?

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