Question

at a constant pressure, the volume of a gas doubles when the temperature in kelvins doubles. this is a statement of which gas law?
○ boyle’s law
○ charles’s law
○ gay - lussac’s law
○ combined gas law

Explanation:

To determine the gas law, we analyze each option:

• Boyle’s law: Relates pressure and volume (constant temperature), not volume and temperature. Eliminate.
• Charles’s law: States that at constant pressure, the volume of a gas is directly proportional to its absolute temperature (in Kelvins). If temperature doubles, volume doubles—this matches the scenario.
• Gay - Lussac’s law: Relates pressure and temperature (constant volume), not volume and temperature. Eliminate.
• Combined gas law: Combines Boyle’s, Charles’s, and Gay - Lussac’s laws (relates \(P\), \(V\), \(T\) for a fixed amount of gas), but the scenario here is a direct \(V - T\) relationship at constant pressure, which is specifically Charles’s law. Eliminate.

Answer:

B. Charles’s law