Q42 / 200 · AP EAMCET 2001 · Chemistry

$n$ moles of an ideal gas at temperature $T$ (in kelvin) occupy $V \mathrm{~L}$ of volume, exerting a pressure of $P$ atmospheres. What is the concentration (in $\mathrm{mol} / \mathrm{L}$ ) ?

  • Correct answer
    A
    $\frac{P}{R T}$
  • B
    $\frac{P T}{R}$
  • C
    $\frac{R T}{P}$
  • D
    $\frac{R}{P T}$

Solution

$\begin{aligned} & P V=n R T \\ & \qquad \begin{aligned} V & =\frac{P}{R T} \\ \text { Concentration } & =\frac{P}{R T}\end{aligned}\end{aligned}$ [OBJECT END

Hence, the correct answer is option: 'A'.

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