Density of a gas is found to be 5.46 g/dm3 at 27 °C at 2 bar pressure.
Question:

Density of a gas is found to be $5.46 \mathrm{~g} / \mathrm{dm}^{3}$ at $27^{\circ} \mathrm{C}$ at 2 bar pressure. What will be its density at STP?

Solution:

Given,

The density (d2) of the gas at STP can be calculated using the equation,

Hence, the density of the gas at STP will be 3 g dm–3.

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