Question

When gas molecules undergo chemical combination they _________ the rate of diffusion of a gas.

double
decrease
triple
no longer affect

Answer 1

Gas molecules triple the rate of diffusion when they undergo chemical combination.

Step-by-step explanation:

When gas molecules undergo chemical combination they triple the rate of diffusion of a gas. When gas molecules combine chemically, the resulting compound usually has a larger molar mass than the individual gas molecules. This larger molar mass leads to slower molecular movement and an overall decrease in diffusion rate. Therefore, the rate of diffusion is tripled when gas molecules undergo chemical combination.