Question #7310f

Jan 29, 2017

It depends on the other factors. But if the volume and temperature is constant, the number of moles should increase as pressure increases for an ideal gas.

Explanation:

Though there are no gas law that directly states the relationship you're asking, you can deduce it from the ideal gas law (assuming we're talking about ideal gases here).

From the ideal gas law, you can isolate the pressure and amount variables:
$P V = n R T$
$\frac{P}{n} = \setminus \frac{R T}{V}$
Treating $\setminus \frac{R T}{V}$ as a proportionality constant $k$, you can see that:
$\frac{P}{n} = k$
$P = k n$

There! We deduced that pressure and the number of moles is directly proportional. Also, you can see some labels of gas tanks that use pressure as indicator of the amount of gas inside a gas tank, in the same way concentration is used for solutions.