The temperature of a specific amount of gas in a sealed container changes from 20.0°C to 40.0°C.If the volume remains constant,the pressure will change from 735 mmHg to ___.
A) 735 mmHg
B) 368 mmHg
C) 1470 mmHg
D) 688 mmHg
E) 785 mmHg

Question

Quizplus · Accepted Answer

According to Gay-Lussac's Law, pressure is directly proportional to temperature when volume is constant. Convert temperatures to Kelvin (293K to 313K) and use P1/T1 = P2/T2 to find the new pressure: (735 mmHg / 293K) = (P2 / 313K), solving gives P2 ≈ 785 mmHg.

The Temperature of a Specific Amount of Gas in a Sealed