The density of a gas at STP is 2.86 , g , L^{ | vedclass

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(D) The density of the gas is $2.86 \, g \, L^{-1}$,which means $1 \, L$ of the gas has a mass of $2.86 \, g$. At $STP$,$1 \, 	ext{mole}$ of any idea

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$SO_2$

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(D) The density of the gas is $2.86 \, g \, L^{-1}$,which means $1 \, L$ of the gas has a mass of $2.86 \, g$. At $STP$,$1 \, 	ext{mole}$ of any ideal gas occupies $22.4 \, L$. Therefore,the molar mass of the gas = $	ext{Density} 	imes 22.4 \, L \, 	ext{mol}^{-1}$. Molar mass = $2.86 \, g \, L^{-1} 	imes 22.4 \, L \, 	ext{mol}^{-1} = 64.064 \, g \, 	ext{mol}^{-1} \approx 64 \, g \, 	ext{mol}^{-1}$. The molar mass of $SO_2$ is $32 + (2 	imes 16) = 64 \, g \, 	ext{mol}^{-1}$. Thus,the gas is $SO_2$.

The density of a gas at $STP$ is $2.86 \, g \, L^{-1}$. Which gas is it?

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