17) Which of the following gases has the highest average speed at 400K? A) SF6 B)...

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Answer 1

Answer #1

Average speed of a gas is inversely proportional to the molecular mass of the gas. Lighter the gas, more is the average velocity and vice versa

Now, the Molecular mass of :

SF₆ = 146 g/mol

OF₂ = 54

NO₂ = 46

SO₂ = 64

Since NO₂ has lightest mass, Hence higher average velocity

option c) NO₂

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Answer 2

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