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omarbrome · May 8, 2013, 06:06 AM

If the absolute temperature of a gas is doubled and the pressure of the gas is halved how will the volume change? Will it increase by 4 times its original value or will it decrease to one forth of its original value

ebaines · May 8, 2013, 06:28 AM

Are you familiar with the Ideal Gas law?

$<br /> PV = nRT$

Rearrange it: $\frac {PV}{T} = nR$

Given the number of moles of gas is constant, then $\frac {PV} T$ is a constant. Hence:

$\frac {P_1 V_1}{T_1} = \frac {P_2 V_2}{T_2}$

So if $P_2 = \frac 1 2 P_1$ , and $T_2 = 2 \times T_1$ , what value must $V_2$ be?

omarbrome · May 8, 2013, 06:40 AM

Thanks a lot, I was solving it the wrong way. Now, I got it right.