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which of the following statements accurately describes Charles's Law

The Pressure of a gas is directly proportional to its temperature when the volume is constant
The Volume of a gas is directly proportional to its temperature when the pressure is constant
The volume of a gas is inversely proportional to its pressure when the temperature is constant
The volume of a gas is directly proportional to its pressure when the temperature is constant

Charles's law looks specifically at how volume and temperature are related to each other. A direct relationship between volume and temperature means: (select all that apply)

As temperature Decreases, Volume decreases
As temperature Decreases, Volume Increases
As temperature increases, Volume decreases
As temperature increases, Volume increases
As volume Decreases, temperature increases
As volume Decreases, Temperature decreases
As volume Increases, temperature increases
As volume Increases, temperature decreases

(btw the balloon increases in hot and decreases in cold)

1 answer

Statement that accurately describes Charles's Law:

  • The Volume of a gas is directly proportional to its temperature when the pressure is constant.

This is the correct statement regarding Charles's Law, which states that if the pressure is held constant, the volume of a gas will increase as the temperature increases, and vice versa.

Direct relationships between volume and temperature as described by Charles's Law:

  • As temperature increases, Volume increases.
  • As volume increases, temperature increases.

These two statements are consistent with the principle of Charles's Law, while the others are incorrect in the context of the law:

  • As temperature decreases, Volume decreases. (This is also true, but it is a consequence of the direct relationship described.)

However, the statements that explicitly refer to direct increases/decreases are the two important ones to highlight.

The incorrect statements are:

  • As temperature Decreases, Volume Increases (this contradicts Charles's Law).
  • As temperature increases, Volume decreases (this contradicts Charles's Law).
  • As volume Decreases, temperature increases (this contradicts Charles's Law).
  • As volume Decreases, Temperature decreases (this is a consequence of the direct relationship but not a direct statement).
  • As volume Increases, temperature decreases (this contradicts Charles's Law).

In summary, the accurate descriptors of the direct relationship as per Charles's Law are primarily focused on the positive correlation between temperature and volume.