Question

When the concentrations of reactant molecules are increased, the rate of reaction increases. The best explanation for this phenomenon is that as the reactant concentration increases,A)the average kinetic energy of molecules increases.B)the frequency of molecular collisions increases.C)the rate constant increases.D)the activation energy increases.E)the order of reaction increases.

Answer 1

Answer:

The correct answer is option B.

Explanation:

When we increase number of molecules of reactant frequency of the molecular collision increases due to which effective collision between reactant molecules to form a product also increases, With this overall rate of the reaction increases.

Where as:

When we increase the temperature of the reactant molecules increase in average kinetic energy of the molecules is observed.

When we increase the activation energy of the reaction rate of the reaction slows down,

Answer 2

The branch of science which deals with chemicals and bonds is called chemistry.

The correct answer for the question is B

The rate of reaction defines as the speed at which a chemical reaction takes place, defined as proportional to the increase in the concentration of a product per unit time and to the decrease in the concentration of a reactant per unit time.

When we increase the number of molecules of reactant frequency of the molecular collision increases due to which effective collision between reactant molecules to form a product also increases, With this overall rate of the reaction increases.

 

When we increase the temperature of the reactant molecules increase in average kinetic energy of the molecules is observed and the collision frequency is increased too.

Hence, the correct answer is B that is the frequency of molecular collisions increases

For more information, refer to the link:-

https://brainly.com/question/19524691