Question

If the pressure of the reacting species decreases then

• A. the rate of the reaction increases
• B. the rate of the reaction decreases
• C. the rate of the reaction does not change
• D. the reaction stops

Answer 1

The correct option is B

the rate of the reaction decreases

Pressure is one of the factors which affects the rate of the reactions. On decreasing the pressure of the gases the molecules become far from each other which decreases the number of molecules per unit volume. The number of collision of molecules decreases which decreases the rate of the reaction.