Question

At the same temperature, which of the following gases will have fastest rate of effusion?
-CO
-SF6
-Cl2
-HBr

Answer 1

According to Graham's law, CO, with the lowest molar mass, will have the fastest rate of effusion.

What is effusion?

In physics and chemistry, effusion is the process in which a gas escapes from a container through a hole of diameter considerably smaller than the mean free path of the molecules.

According to Graham's law, the rate of effusion (r) is inversely proportional to the square root of the molar mass (M) of the gas.

r ∝ 1/√M

We have the following gases with the respective molar masses.

• CO (28.01 g/mol)
• SF₆ (146.05 g/mol)
• Cl₂ (70.90 g/mol)
• HBr (80.91 g/mol)

According to Graham's law, CO, with the lowest molar mass, will have the fastest rate of effusion.

Learn more about effusion here: https://brainly.com/question/2097955