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Chemistry Forums for Students => Inorganic Chemistry Forum => Topic started by: Lourdes on May 22, 2017, 09:35:25 AM

Title: How does the pressure of a gas change?/Boyle's Law
Post by: Lourdes on May 22, 2017, 09:35:25 AM

Hello :)

I have a short question:

The volume of a gas is reduced by a third at constant temperature. How does the pressure change?
I think this is Boyle's Law. I would say the pressure triples, is that correct?

Thanks for clarification!

Title: Re: How does the pressure of a gas change?/Boyle's Law
Post by: sjb on May 22, 2017, 11:22:00 AM

Quote from: Lourdes on May 22, 2017, 09:35:25 AM

Hello :)

I have a short question:

The volume of a gas is reduced by a third at constant temperature. How does the pressure change?
I think this is Boyle's Law. I would say the pressure triples, is that correct?

Thanks for clarification!

I don't think you're going from V to V/3, rather V to 2V/3.

Title: Re: How does the pressure of a gas change?/Boyle's Law
Post by: Lourdes on May 22, 2017, 12:28:41 PM

But nevertheless my pressure is going to triple, right? In my book it says that if you decrease the volume by 50%, like half of it, the pressure is going to double. Am I getting things mixed up here?

Title: Re: How does the pressure of a gas change?/Boyle's Law
Post by: Borek on May 22, 2017, 05:30:05 PM

Quote from: Lourdes on May 22, 2017, 12:28:41 PM

But nevertheless my pressure is going to triple, right?

No.

Instead of guessing try to calculate it, Boyle's law has a simple mathematical form.