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#Charles's law

3 public questions tagged with this topic.

Specific Heat and Calorimetry

Which law explains why the volume of a gas increases when its temperature rises at constant pressure?

Charles’ Law states that at constant pressure, the volume of a gas is directly proportional to its absolute temperature (V/T = constant, Section 10.4). As per NCERT, applying relevant law/formula with correct units and sign convention leads to Charles’ Law. This satisfies dimensional consistency and physical conditions given, so option B is scientifically correct.

Ref: NCBI Bookshelf, Ideal Gas Law: P1V1/T1 = P2V2/T2.

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Thermal Expansion of Solids and Liquids

What happens to the temperature of an ideal gas if its volume doubles at constant pressure?

Charles’ Law states that at constant pressure, V/T = constant. If volume doubles (V2 = 2V1), the absolute temperature doubles (T2 = 2T1). As per NCERT, applying relevant law/formula with correct units and sign convention leads to It doubles. This satisfies dimensional consistency and physical conditions given, so option C is scientifically correct.

Ref: NCBI Bookshelf, Ideal Gas Law: P1V1/T1 = P2V2/T2.

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Temperature Scales and Triple Point

What happens to the volume of an ideal gas if its temperature is doubled at constant pressure?

For an ideal gas at constant pressure, Charles’ Law states that volume is directly proportional to absolute temperature. If temperature doubles, volume doubles. As per NCERT, applying relevant law/formula with correct units and sign convention leads to It halves. This satisfies dimensional consistency and physical conditions given, so option A is scientifically correct.

Ref: NCBI Bookshelf, Ideal Gas Law: P1V1/T1 = P2V2/T2.

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