Preserving food by freezing controls reaction rates by

A) decreasing the number of collisions

B) increasing concentration

C) changing the number of effective reactant collisions

D) both a and c are correct

Question

Chemistry

Hammer

27 January, 13:05

Preserving food by freezing controls reaction rates by

A) decreasing the number of collisions

B) increasing concentration

C) changing the number of effective reactant collisions

D) both a and c are correct

+4

Answers (1)

Know the Answer?

Willow Jacobson · Answer 1

D) both a and c are correct

Explanation:

The reaction rate is a measure of the speed of a chemical reaction. The factors that affects the rate of a chemical reaction are itemised below:

Nature of the reactants Concentration of the reactants or pressure (if gaseous) Temperature Presence of catalyst Sunlight

Our concern here is temperature. Temperature affects a reaction considerably. Average kinetic energy is directly proportional to the temperature of the reacting particles. When the temperature of a reacting system is increase, the frequency of ordinary and effective collisions per unit time increases. A decrease in temperature implies that the number of collisions also decreases.

Preserving food by freezing controls reaction rates byA) decreasing the number of collisionsB) increasing concentrationC) changing the number of effective reactant collisionsD) both a and c are correct

Preserving food by freezing controls reaction rates by

A) decreasing the number of collisions

B) increasing concentration

C) changing the number of effective reactant collisions

D) both a and c are correct