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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: CoCoCo on October 17, 2012, 12:44:58 PM

Title: Calculate the inverse volume of a gas
Post by: CoCoCo on October 17, 2012, 12:44:58 PM

I appreciate all of the help you guys have given me in the past! However once again I kindly need your help.

I do not know the formula for solving for the calculated inverse volume of a gas. I have been given the pressure of the gas 40.0 lb/in^2 and the volume of the gas 12.0 mL.

Any help would be greatly appreciated.

Title: Re: Calculate the inverse volume of a gas
Post by: Dan on October 17, 2012, 04:50:26 PM

I would read "inverse X" as 1/X.

Not sure exactly what you are asking as without context it makes little sense.

Title: Re: Calculate the inverse volume of a gas
Post by: CoCoCo on October 18, 2012, 12:22:33 AM

My apologies sir!

I am supposed to calculate the inverse volume value given the information I have been given.

Pressure of gas = 40.0 lb/in^2

Volume of the gas = 12 mL

I am supposed to solve for the inverse volume of the gas 1/V.

This topic revolves around Lussac and Boyles laws

Once again, sorry.

Title: Re: Calculate the inverse volume of a gas
Post by: Dan on October 18, 2012, 03:00:24 AM

Perhaps I am missing something as well but if you already know V = 12 mL, then what is the problem calculating 1/V?

Title: Re: Calculate the inverse volume of a gas
Post by: CoCoCo on October 18, 2012, 02:00:54 PM

So the pressure of the gas is irrelevant?

Title: Re: Calculate the inverse volume of a gas
Post by: Dan on October 18, 2012, 02:24:06 PM

As far as I can see, yes.

if V = 12 mL, 1/V = (1/12) mL^-1

Title: Re: Calculate the inverse volume of a gas
Post by: CoCoCo on October 18, 2012, 05:17:05 PM

The question also mentioned that the data data was collected for pressure and volume of a gas sample at constant temperature.

Not sure if this information is important.

Title: Re: Calculate the inverse volume of a gas
Post by: Dan on October 18, 2012, 05:37:17 PM

It might help if you post the whole question in full.

Title: Re: Calculate the inverse volume of a gas
Post by: CoCoCo on October 18, 2012, 11:02:12 PM

Suppose you collect the following data for pressure and volume of a gas sample at constant temperature. Calculate the inverse volume value when the pressure of the gas is 40.0 lb/in squared and the volume of the gas is 12.0 mL.

Title: Re: Calculate the inverse volume of a gas
Post by: Dan on October 20, 2012, 06:18:36 PM

If the volume is 12 mL at 40 lb/in₂, then 1/V = (1/12) mL^-1.

If 12 mL refers to the initial volume, V₁, of the gas at an initial pressure P₁, and then the pressure has been changed to P₂ (= 40 lb/in₂), you would have to calculate the corresponding new volume V₂.

The question you quoted implies there is a data set that you are not showing.

I can not help you any further unless you post the entire question exactly as you have it - as I have already asked.

Title: Re: Calculate the inverse volume of a gas
Post by: CoCoCo on October 20, 2012, 08:33:37 PM

I think what you posted was correct.

Thank you, I appreciate it!