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Characteristics of Chemical Equilibrium

Assertion :As...

Question

Assertion :Assertion : When ice and water are kept in a perfectly insulated thermos flask at $273$ K and the atmospheric pressure, there is no change in mass of ice and water. Reason: Reason : The system is in static equilibrium.

A

If both the assertion and reason are true and reason is the correct explanation of assertion.

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B

If both the assertion and reason are true but reason is not the correct explanation of assertion.

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C

If assertion is true but reason is false.

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D

If both assertion and reason are false.

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Solution

The correct option is C If assertion is true but reason is false.
During liquification of ice to water, an equilibrium is established. The rates of transfer of molecule from ice to water and from water to ice will remain same at the given temperature and atmosphere pressure, so, the mass of ice and water do not change. But, the system is in the state of dynamic equilibrium.

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