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The heat capacity at constant volume (Cv) is defined as: (2022)

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Question: The heat capacity at constant volume (Cv) is defined as: (2022)

Options:

  1. The amount of heat required to raise the temperature of a substance by 1°C at constant pressure.
  2. The amount of heat required to raise the temperature of a substance by 1°C at constant volume.
  3. The total heat content of a substance.
  4. The heat required to change the phase of a substance.

Correct Answer: The amount of heat required to raise the temperature of a substance by 1°C at constant volume.

Exam Year: 2022

Solution: 

The heat capacity at constant volume (Cv) is defined as the amount of heat required to raise the temperature of a substance by 1°C at constant volume.

The heat capacity at constant volume (Cv) is defined as: (2022)

Practice Questions

Q1
The heat capacity at constant volume (Cv) is defined as: (2022)
  1. The amount of heat required to raise the temperature of a substance by 1°C at constant pressure.
  2. The amount of heat required to raise the temperature of a substance by 1°C at constant volume.
  3. The total heat content of a substance.
  4. The heat required to change the phase of a substance.

Questions & Step-by-Step Solutions

The heat capacity at constant volume (Cv) is defined as: (2022)
  • Step 1: Understand that heat capacity is a measure of how much heat energy a substance can store.
  • Step 2: Recognize that 'constant volume' means the substance is not allowed to expand or change its volume while heating.
  • Step 3: Know that Cv specifically refers to the heat capacity when the volume is kept constant.
  • Step 4: Learn that Cv tells us how much heat energy is needed to increase the temperature of the substance by 1°C.
  • Step 5: Conclude that Cv is important for understanding how substances respond to heat when their volume does not change.
  • Heat Capacity at Constant Volume (Cv) – Cv measures the amount of heat needed to increase the temperature of a substance by 1°C while keeping its volume constant.
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