Question

When the temperature is increased, the speed of a chemical reaction usually increases because the
(1) Pressure has decreased
(2) molecules collide less frequently
(3) fractional of the molecules possessing the activation energy for the reaction increases

Which of the above option(s) is/ are correct?

• A. If 1,2 and 3 are correct
• B. If only 1 and 2 are correct
• C. If only 2 and 3 are correct
• D. If only 1 is correct
• E. If only 3 is correct

Answer 1

The correct option is C If only 2 and 3 are correct

When the temperature increases the speed of chemical reaction is increased, because when the molecules of the reactant collide very fastly and it is less frequently, and a fraction of the molecules possessing the activation energy for the reaction increases.

so 2 and 3 are the correct options

Answer is C