Suppose a reaction A + B C occurs at some initial rate at 0°C. Which response includes all of the changes below that could decrease the rate of this reaction?

Question

Suppose a reaction A + B C occurs at some initial rate at 0°C.

Which response includes all of the changes below that could decrease the rate of this

reaction?

I. lowering the temperature

II. Adding a catalyst

III. Decreasing the initial concentration of A

A.I B.II C.III D.I and III E. II and III

Answer 1

So this question is asking about which changes would decrease the rate of the reaction!

Lowering the temperature would slow the reaction down because lower temperatures you will have less frequent and lower energy collisions

Catalyst will speed a reaction up!

if you lower the concentration of A then you would have less molecules to collide with so that would lower the overall reaction!

So answers are I and III answer choice D

Suppose a reaction A + B C occurs at some initial rate at 0°C.

Which response includes all of the changes below that could decrease the rate of this

reaction?

I. lowering the temperature

II. Adding a catalyst

III. Decreasing the initial concentration of A

A.I B.II C.III D.I and III E. II and III