According to Charles’ Law, if the volume of a sample of O2 gas is doubled while pressure is held constant, what happens to the absolute temperature?
a) It doubles.
b) It decreases by ½.
c) It remains constant.

Question

According to Charles’ Law, if the volume of a sample of O2 gas is doubled while pressure is held constant, what happens to the absolute temperature?
a)    It doubles.
b)    It decreases by ½.
c)    It remains constant.

anonymous · Answer

I know Charles' law is  V = kT or VR/TR = VS/TS.

jfraser · Answer

if you rearrange the first equation, you'll get this:$$\frac{V}{T} = k$$ so if the V/T ratio must be constant, what must the answer be?

abhisar · Answer

Volume is directly proportional to temperature

abhisar · Answer

now guess the correct answer

anonymous · Answer

it remains constant or does it double?

jfraser · Answer

V/T must always be constant for a given amount of gas. If V doubles, ....

abhisar · Answer

It is directly proportional. What do u understand by this ?

abhisar · Answer

This means the same change will occur to both

abhisar · Answer

Now can u guess the answer ?

anonymous · Answer

If volume doubles then temperature must also double?

abhisar · Answer

Bingo !!

abhisar · Answer

Thnx @JFraser !

anonymous · Answer

Okay thank you both a lot! :D

jfraser · Answer

YW