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The density of ${CO}_{2}$ gas at 27 $°$ C and 1atm pressure is –––– (gram/lit)

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1.52

1.96

1.78

1.20

answer is A.

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Detailed Solution

P=1atm, Molecular mass of ${CO}_{2}$ =44gram, R=0.0821 lit-atm/mol.K

$T = 27 ° C + 273 = 300 K$

$PM = dRT$

$d = \frac{PM}{RT}$

$d = \frac{1 \times 44}{0.0821 \times 300} = \frac{44}{24.63}$

$d = 1.78 g / lit$

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