11 Gases
The Ideal Gas Law Applications
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If the number of moles n inside a container were tripled while keeping the pressure p constant, what will happen to the volume v? Alright. So in this question they're telling us that our pressure is being held constant, so just ignore it. What's changing are our moles and we have to understand what effect will that have on my volume. Looking at the ideal gas law, p v equals n r t, we're only paying attention to volume and moles. The other variables we can remove. By doing that we see that it simplifies further into v equals n. So this means that volume and moles have a direct relationship to each other, they're directly proportional. Meaning, whatever happens to 1, the same thing happens to the other. Since our moles are being tripled, that would mean that my volume would also have to be tripled. This mean the this means that the answer would have to be option c. So again, sometimes you'll be faced with questions like this where you're not given actual numbers, but you have to understand the direct or possibly inverse relationship between a pair of variables from the ideal gas law.
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