Which Set of Gases Is Listed from Highest to Lowest $\degree$

question 109

Multiple Choice

Which set of gases is listed from highest to lowest root-mean-square speed at 25 $\degree$ C?

• A)HCN \(\gt\) Cl₂ \(\gt\) CO₂ \(\gt\) HBr
• B)CO₂\(\gt\) HCN \(\gt\) Cl₂\(\gt\) HBr
• C)HBr \(\gt\) Cl₂ \(\gt\) HCN \(\gt\)CO₂
• D)HBr \(\gt\) Cl₂ \(\gt\)CO₂ \(\gt\) HCN
• E)HCN \(\gt\) CO₂\(\gt\)Cl₂ \(\gt\) HBr