When ammonia gas is subjected to sudden expansion from a region of high pressure into a region of low pressure, which of the following changes is expected to take place?

Decrease in kinetic energy and potential energy

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Conversion of kinetic energy to potential energy

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Conversion of potential energy to kinetic energy

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Increase in kinetic energy and potential energy

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Solution

The correct option is D Conversion of kinetic energy to potential energy
When the pressure is lowered and the gas will have kinetic energy when the pressure is higher. As the gas is allowed to expand slowly by Energy conservation theorem the Kinetic energy present in the molecules converts into potential energy.
Hence option B is correct answer.

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