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Byju's Answer

Standard XII

Chemistry

Le Chatelier's Principle for Del N Equals to 0

20 gm of Ca...

Question

$20 g m$ of $C a C O_{3}$ is allowed to dissociate in a $5.6$ litres container at $819^{o} C$ . If $50 %$ of $C a C O_{3}$ is dissociate at equilibrium. The $K_{p}$ value is:

5 a t m

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1.6 a t m

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4.8 a t m

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10 a t m

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Solution

The correct option is B $1.6 a t m$
$C a C O_{3} \to C a O_{(s)} + C O_{2_{(} g)}$
$t = 0 \frac{1}{5} m o l$
$\frac{1}{10} m o l \frac{1}{10} \frac{1}{10}$
$P_{C O_{2}} = \frac{n R T}{V}$ [from Ideal gas equation]
$= \frac{1}{10} \times \frac{0.0821 \times 1092}{5.6}$
$P_{C O_{2}} = 1.6$
$∴ K_{p} = P_{C O_{2}} = 1.6$ atm

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Similar questions

Q. 20 gm of

C a C O_{3}

is allowed to dissociate in a 5.6 liters container at

819^{0} C

. If 50% of

C a C O_{3}

is dissociated at equilibrium the

^{'} K_{p}^{'}

value is:

Q. What is minimum mass (in g) of

C a C O_{3} (s)

will be required to establish the equilibrium

C a C O_{3} (s) ⇌ C a O (s) + C O_{2} (g)

1000 K

in a

4 L

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C O_{2}

0.82 a t m

. Equilibrium constant

K_{P}

for the dissociation reaction

1.64 a t m

Q. For the following reaction,

1 g

mole of

C a {C O}_{3}

is enclosed in

5 L

container.

C a {C O}_{3} (s) ⟶ C a O (s) + {C O}_{2} (g)

K_{p} = 1.16

1073 K

, then percentage dissociation of

C a {C O}_{3}

is:

50 g C a C O_{3}

are heated to

1073 K

in a

5 L

vessel. What percentage of

C a C O_{3}

would decompose at equilibrium? The value of

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for the reaction.

C a C O_{3} (s) ⇌ C a O (s) + C O_{2} (g)

1.15 a t m

1073 K

20.0

grams of

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were placed in a closed vessel, heated & maintained at

727^{o}

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C a C O_{3} (s) ⇌ C a O (s) + C O_{2} (g)

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20 gm of CaCO3 is allowed to dissociate in a 5.6 litres container at 819oC. If 50% of CaCO3 is dissociate at equilibrium. The Kp value is:

The correct option is B 1.6 atmCaCO3→CaO(s)+CO2(g)t=015mol110mol110110PCO2=nRTV [from Ideal gas equation]=110×0.0821×10925.6PCO2=1.6∴Kp=PCO2=1.6 atm

$20 g m$ of $C a C O_{3}$ is allowed to dissociate in a $5.6$ litres container at $819^{o} C$ . If $50 %$ of $C a C O_{3}$ is dissociate at equilibrium. The $K_{p}$ value is: