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Le Chatelier's Principle for Del N Greater Than Zero

Consider the ...

Question

Consider the reaction, $P C l_{5} (g) ⇌ P C l_{3} (g) + C l_{2} (g)$ in a closed container at equilibrium at a fixed temperature. What will be the effect of adding more $P C l_{5}$ on the equilibrium concentration of $C l_{2} (g)$ ?

A

it decreases

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B

it increases

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C

it remains unaffected

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D

it cannot be predicted without the value of

K_{p} .

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Solution

The correct option is B it increases
Given reaction,
$P C l_{5} (g) ⇌ P C l_{3} (g) + C l_{2} (g)$
When we add $P C l_{5}$ to the equilibrium mixture at constant temperature in closed vessel its concentration will increase.
By Le Chatelier's principle, to nullify the effect the equilibrium is shifted to right so that more $P C l_{5}$ is consumed and the effect is nullified. Due to equilibrium shift to right hand side, the product concentration will increase. Hence, the equilibrium concentration of $C l_{2}$ increases

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Similar questions

Q. Consider the reaction,

P C l_{5} (g) ⇌ P C l_{3} (g) + C l_{2} (g)

in a closed container at equilibrium at a fixed temperature. What will be the effect of adding more

P C l_{5}

on the equilibrium concentration of

C l_{2} (g)

?

Q. Suppose the reaction

P C l_{5} (g)

⇌

P C l_{3} (g)

C l_{2} (g)

as equlibirium in closed vessel. What is the effect on equilibirium concentration of the

C l_{2} (g)

P C l_{5}

at constant temperatue

P C l_{5}, P C l_{3} a n d C l_{2}

are at equilibrium at

500

K in a closed container and their concentrations are

0.8 \times 10^{- 3} m o l L^{- 1}, 1.2 \times 10^{- 3} m o l L^{- 1}

1.2 \times 10^{- 3} m o l L^{- 1}

respectively.
The value of

K_{c}

for the reaction:

P C l_{5 (g)} ⇌ P C l_{3 (g)} + C l_{2 (g)}

1.6 m o l e

P {C l}_{5} (g)

4 {d m}^{3}

closed vessel. When the temperature is raised to

500 K

, it decomposes and at equilibrium

1.2 m o l e

P {C l}_{5} (g)

remains. What is the

K_{c}

value for the decomposition of

P {C l}_{5} (g)

P {C l}_{3} (g)

{C l}_{2} (g)

500 K

?

P C l_{5} (g) ⇌ P C l_{3} (g) + C l_{2} (g)

P C l_{5}

be put in a container of volume V litre and at equilibrium, x moles of it was decomposed, find its

K_{p}

K_{c}

at equilibrium pressure of P atm.

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Le Chatelier's Principle for Del N Greater Than Zero

Standard XII Chemistry

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