Question

When small pieces of manganese oxide were added to a solution of hydrogen peroxide, water and oxygen were produced. Manganese oxide was not used up in the reaction. Which of the following is likely to increase the rate of the reaction?
A) Reducing the number of pieces of manganese oxide used
B) Increasing the amount of solution
C) Using one cube of equal mass of manganese oxide
D) Chilling the hydrogen peroxide solution

Answer 1

The change which increase the rate of the reaction is by increasing the amount of solution.

What is the rate of the reaction?

Rate of the reaction gives idea about the speed of the completion of the reaction or the formation of the products.

Given chemical reaction is:
2H₂O₂ $\overset{MnO_{2}}{\rightarrow}$ 2H₂O + O₂

In the above chemical reaction MnO₂ acts as a catalyst which helps in increasing the rate of the reaction without being involved in the reaction. So the formation of the product depends only on the concentration of the solution. So, by increasing the solution amount will increase in the rate.

Hence, increasing the amount of solution will increase the rate.

To know more about rate of reaction, visit the below link:
brainly.com/question/7578129

#SPJ1