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Standard XII

Chemistry

Characteristics of Chemical Equilibrium

For the react...

Question

For the reaction: $C a C O_{3}$ (s) $⇌$ CaO(s) + $C O_{2}$ (g). $K_{p}$ = 1 atm at $927^{0}$ C. If 20g of $C a C O_{3}$ were kept in a 10 liter vessel at $927^{0}$ C, then calculate percentage of $C a C O_{3}$ remaining at equilibrium:

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Solution

Given, $K_{P}$ =1 atm= $P_{C O_{2}}$
V=10 liters
Temperature=927+273=1200 K
m=20 g
$⟹ P V = n R T ⟹ (1) (10) = (n) (0.0821) (1200) ⟹ n = 0.1 m o l e s$
0.1 moles of $C O_{2}$ is produced.
So, 0.1 moles of $C a C O_{3}$ is consumed, i.e.,10 g of $C a C O_{3}$ is consumed and 50% of $C a C O_{3}$ is remaining.

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For the reaction: CaCO3(s) ⇌ CaO(s) + CO2(g). Kp = 1 atm at 9270C. If 20g of CaCO3 were kept in a 10 liter vessel at 9270C, then calculate percentage of CaCO3 remaining at equilibrium:

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For the reaction: $C a C O_{3}$ (s) $⇌$ CaO(s) + $C O_{2}$ (g). $K_{p}$ = 1 atm at $927^{0}$ C. If 20g of $C a C O_{3}$ were kept in a 10 liter vessel at $927^{0}$ C, then calculate percentage of $C a C O_{3}$ remaining at equilibrium: