Question

At constant pressure, the volume of a gas is directly proportional to the temperature expressed in _______.

• A. ${}^{\circ }\text{C}$
• B. ${}^{\circ }\text{F}$
• C. $\text{K}$
• D. All of the above.

Answer 1

The correct option is C $\text{K}$

According to Charles' law, for a fixed amount of a perfect gas, the volume of the gas varies directly with the absolute temperature of the gas, at constant pressure.
Absolute temperature is the temperature expressed in S.I. unit, i.e. kelvin ($\text{K}$).