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Characteristics of Equilibrium Constant

At 500 K, the...

Question

At 500 K, the equilibrium constant for the reaction
cis- $C_{2} H_{2} C l_{2} \Leftrightarrow t r a n s - C_{2} H_{2} C l_{2}$ is 0.6 At the same temperature the equilibrium constant for the reaction trans - $C_{2} H_{2} C l_{2} \Leftrightarrow c i s C_{2} H_{2} C I_{2}$ .
will be:

A

0.6

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B

1.66

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C

1

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D

16.6

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Solution

The correct option is A 1.66
When the reaction $c i s - C_{2} H_{2} C l_{2} \Leftrightarrow t r a n s - C_{2} H_{2} C l_{2}$ is reversed, the reaction $t r a n s - C_{2} H_{2} C l_{2} \Leftrightarrow c i s C_{2} H_{2} C I_{2}$ is obtained.
When the reaction is reversed, its equilibrium constant value is obtained by finding reciprocal of the equilibrium constant of original reaction.
Thus the value of the equilibrium constant for the second reaction is the reciprocal of the value of the equilibrium constant for the first reaction. It is equal to $\frac{1}{0.6} = 1.66$ .

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Similar questions

Q. At 500 K, the equilibrium constant for

c i s - C_{2} H_{2} C l_{2} ⇋ t r a n s - C_{2} H_{2} C l_{2}

is 0.6. At the same temperature, the equilibrium constant for the given reaction

t r a n s - C_{2} H_{2} C l_{2} ⇋ c i s - C_{2} H_{2} C l_{2}

500 K

, the equilibrium constant for

cis - C_{2} H_{2} C l_{2} (g) ⇋ trans - C_{2} H_{2} C l_{2} (g)

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. At the same temperature, the equilibrium constant for the reaction,

trans - C_{2} H_{2} C l_{2} (g) ⇋ cis - C_{2} H_{2} C l_{2} (g)

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, the equilibrium constant for reaction

{c i s - C}_{2} H_{2} {C l}_{2} (g) ⇌ {t r a n s - C}_{2} H_{2} {C l}_{2} (g)

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{t r a n s - C}_{2} H_{2} {C l}_{2} (g) ⇌ {c i s - C}_{2} H_{2} {C l}_{2} (g)

Q. The reaction

c i s - C r (e n)_{2} (O H)_{2}^{+}_{1} t r a n s - C r (e n)_{2} (O H)_{2}^{+}

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