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Question

Consider the following statements regarding chemical equilibrium:
(1) For the gaseous reaction, the equilibrium can be established in open vessel.
(2) The state of equilibrium is dynamic in nature.
(3) If the temperature is kept constant, the colour of the reacting system changes with time.
Which of the statements given above is /are correct?

A
1
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B
2
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C
3 only
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D
2 and 3 only
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Solution

The correct option is B 2 and 3 only
For a chemical equilibrium, the statements (2) and (3) are correct.
(1) For the gaseous reaction, the equilibrium can be established in a closed vessel. The equilibrium cannot be established in open vessel as gases can escape.
(2) The state of equilibrium is dynamic in nature. At equilibrium, both forward and reverse reactions proceed at equal rates.
(3) If the temperature is kept constant, the colour of the reacting system changes with time. This is because the concentration of the species (that is responsible for the colour) changes with time due to the progress of the reaction.

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