Which of the following is correct regarding the internal energy of substance ?

It is a state function.

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It increases with increase in temperature.

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It can be calculated by experiment.

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It remains unaffected with change in temperature

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Solution

The correct option is A It is a state function.
The internal energy is the total amount of kinetic energy and potential energy of all the particles in the system this is a astate function Hence A is correct answer

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The temperature of a substance remains unaffected during its change of state.

Δ H

Δ S

3 mol

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10^{o} C

R = 8.31 J / m o l e - K

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