# For an ideal gas , number of moles per litre in terms of its pressure P , gas constant R and temperature T is

$(a)\;\large\frac{PT}{R}\qquad(b)\;PRT\qquad(c)\;\large\frac{P}{RT}\qquad(d)\;\large\frac{RT}{P}$

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• According to Ideal Gas Equation, $pV=nRT$
$\therefore$ number of moles per litre, $\large\frac{n}{V} = \large\frac{P}{RT}$
Hence answer is (c)
answered Feb 12, 2014
edited Apr 2, 2014