In the diagram, the black line represents the concentration of a reactant and the green line represents the concentration of a product.

which statement best describes the reaction rate?

a. the product maintains an constant concentration in the first half of the reaction.

b. at the end of the reaction, both product and reactants are of a constant concentration.

c. the reactants maintain an constant concentration in the first half of the reaction.

d. at the end of the reaction, both product and reactants are of an equal concentration.

i think its a. correct if i am wrong. i need this answered asap.

The correct answer is :

B. At the end of the reaction, both product and reactants are of a constant concentration.

Explanation:

As you can see from the graph,

The concentration of reactant continously decreases with time

And the concentration of product continously increases with time.

But as the time proceeds , at the end of the reaction the concentrations of both reactant and product remains constant.

so the correct answer is :

B. At the end of the reaction, both product and reactants are of a constant concentration.

B. At the end of the reaction, both product and reactants are of a CONSTANT concentration.

Explanation:

Hope this helps!!