Question

what is true about the behavior of gases?
select the correct answer(s).
if the volume is constant, then if the temperature goes up, the pressure goes
if the pressure is constant, then if the temperature goes up, the volume goes
if the volume is constant, then if the temperature goes up, the pressure goes up.
if the temperature is constant, then if the volume goes up, the pressure goes
if the temperature is constant, then if the volume goes up, the pressure goes
if the pressure is constant, then if the temperature goes up, the volume goes up.

Explanation:

• Charles's Law: \( V\propto T\) (when \( P\) is constant). So if pressure (\(P\)) is constant, when temperature (\(T\)) goes up, volume (\(V\)) goes up.
• Gay - Lussac's Law: \( P\propto T\) (when \( V\) is constant). So if volume (\(V\)) is constant, when temperature (\(T\)) goes up, pressure (\(P\)) goes up.
• Boyle's Law: \( P\propto\frac{1}{V}\) (when \( T\) is constant). But the options do not involve Boyle's Law relationships for the given conditions.

Answer:

• If the pressure is constant, then if the temperature goes up, the volume goes up.
• If the volume is constant, then if the temperature goes up, the pressure goes up.