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Ideal Gas Equation

The density o...

Question

The density of a gas is equal to:
[( $P$ = pressure, $V$ = Volume, $T$ = temperature, $R$ = gas constant, $n$ = number of moles and $M_{W}$ = molecular weight]

n P

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\frac{P M_{W}}{R T}

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\frac{P}{R T}

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\frac{M_{W}}{V}

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Solution

The correct option is D $\frac{P M_{W}}{R T}$
$P V = n R T = \frac{w}{M_{W}} R T$

$P M_{W} = \frac{w}{V} R T = d R T$

But, $d = \frac{w}{V}$

$∴ d = \frac{P M_{W}}{R T}$

Hence, the correct option is $B$

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Similar questions

Select the correct formula :

(where k=Boltzmann's constant, R= gas constant, n= moles, r = density, M= molecular weight, p= pressure, T= kelvin temperature, V= volume)

a) k=RN $_{a v}$

b) $r = \frac{n M}{V}$

c) $\frac{p}{r} = \frac{R T}{M}$

d) R=kN $_{a v}$

P = \frac{R T}{V - b} e^{\frac{- a V}{R T}} .

a

V

=

T

=

P

=

R

=

I

M W = d R T / P V

I I

d = g / m L

R = L \times a t m / (m o l \times K)

T = K

P = a t m

V = L

a

(P + \frac{a}{V^{2}}) (V - b) = R T

V

P

R

T

\frac{P}{R T}

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