If a gas is compressed from 5 L to 1 L and the temperature remains constant, what happens to the pressure?

Question

If a gas is compressed from 5 L to 1 L and the temperature remains constant, what happens to the pressure

1.The final pressure is 5 times the original pressure.

2.The final pressure is the same as the original pressure + 5 atm.

3. The pressure remains constant.

4. The final pressure is 1/5 of the original pressure.

Answer 1

PV = T
So if you want T to stay the same and you reduce V by a factor of 5, then you have to increase P (pressure) by a volume of 5.

So choice 1.

Answer 2

it is 5 times greater