What temperature scale should be used if we wish to express Charles's Law as a simple direct proportionality?
A) Fahrenheit
B) Celsius
C) Kelvin
D) It makes no difference.

Question

Quizplus · Accepted Answer

Charles's Law states that the volume of a gas is directly proportional to its absolute temperature at constant pressure. Therefore, if we want to express this law as a simple direct proportionality, we need to use the absolute temperature scale, which is Kelvin. This is because the temperature on the Kelvin scale begins at absolute zero, which is the point at which all molecular motion ceases. Using the Celsius or Fahrenheit scales would not account for this zero point and would not allow us to express the law as a direct proportionality.

What Temperature Scale Should Be Used If We Wish to Express