The statement 'as temperature increases, volume increases' describes which gas law?

The statement 'as temperature increases, volume increases' describes which gas law?

• A. Boyle's Law
• B. Avogadro's Law
• C. Charles's Law
• D. Gay-Lussac's Law

Answer: (C)

It's about how a gas's volume changes with temperature when pressure is held constant. Charles's Law states that volume is directly proportional to absolute temperature, so as temperature increases, the volume increases as well. This relationship is written as V ∝ T, or V2/T2 = V1/T1 when pressure stays the same, with temperatures in Kelvin. Using Kelvin matters because it uses an absolute scale starting at zero, which keeps the relationship linear; Celsius can show the same trend but isn’t the exact proportionality form. This is why heating a gas in a flexible container, like a balloon, at constant pressure makes it expand. Other gas laws describe different conditions: at constant temperature, volume varies inversely with pressure; at constant pressure, changing the amount of gas changes the volume; at constant volume, pressure varies with temperature.

It's about how a gas's volume changes with temperature when pressure is held constant. Charles's Law states that volume is directly proportional to absolute temperature, so as temperature increases, the volume increases as well. This relationship is written as V ∝ T, or V2/T2 = V1/T1 when pressure stays the same, with temperatures in Kelvin. Using Kelvin matters because it uses an absolute scale starting at zero, which keeps the relationship linear; Celsius can show the same trend but isn’t the exact proportionality form.

This is why heating a gas in a flexible container, like a balloon, at constant pressure makes it expand. Other gas laws describe different conditions: at constant temperature, volume varies inversely with pressure; at constant pressure, changing the amount of gas changes the volume; at constant volume, pressure varies with temperature.