The density of a certain diatomic gas is 1.696 g/L at STP. Identify the gas.

Question

Quizplus · Accepted Answer

The molar mass of a gas can be calculated from its density at STP using the equation Molar Mass = (Density of Gas * Molar Mass of Air)/Density of Air. Using this equation with the given density of 1.696 g/L, we get a molar mass of approximately 38 g/mol. The only diatomic gas with a molar mass close to this value is fluorine gas (F2) with a molar mass of 38.00 g/mol. Therefore, the answer is choice C, which represents fluorine gas.

The Density of a Certain Diatomic Gas Is 1