Question

You place a balloon in a closed chamber at standard temperature and pressure (STP). You double the chamber temperature while leaving the pressure constant. What happens to the balloon?

A. It stays the same volume
B. It decreases to one half of its original volume
C. It expands to four times its original volume
D.it doubles in volume

Answer 1

it is b because the more pressure pushing down on it.

Answer 2

Answer: D) it doubles in volume

Explanation: This can be explained by using Charle's law.

Charles' Law states that volume is directly proportional to the temperature of the gas at constant pressure and number of moles.

$V\propto T$     (At constant pressure and number of moles)

Thus when temperature is doubled at constant pressure and constant number of moles, the volume also doubles.