Question

Which condition will decrease the rate of reaction between excess magnesium and hydrochloric acid?

I. Decreasing temperature

II. Increasing mass of magnesium

III. Increasing the concentration of acid

IV.Using magnesium ribbon instead of power

Answers:
A. I and IV
B. I and III
C. II and III
D. II and IV

Answer 1

B

Step-by-step explanation:

The four factors that increase the rate of the reaction:

1.Concentration of the reactants

2.Size of the particles

3.Temperature

4.Catalyst