Q. 8.20 - An Introduction to General, Organic, and Biological Chemistry

Question

A sample of Ne gas has a pressure of 654 mmHg with an unknown volume. The gas has a pressure of 345 mmHg when the volume is 495 mL, with no change in temperature or amount of gas. What was the initial volume, in milliliters, of the gas?

Step-by-Step Solution

Answer

The initial volume of the gas was $261ml$.

Step 1: Given information

We need to find the initial volume of the gas in millilitres.

Step 2: Explanaiton

As the temperature is not changing so we can apply Boyle's law

$P1V1=P2V2$

Now,

$P1=654 mmHg$

$P2=345 mmHg$

$V2=495 ml$

Substituting the given values we get,

$V1=\frac{345 mmHg\times 495 ml}{654 mmHg}=261 ml$

So the initial value of gas was $261ml$