444,565 views
20 votes
20 votes
ASAP

The concentration of reactants and products and the rate of reaction were measured during a chemical reaction. After the first 3 seconds, the rate of reaction was 1.8 x10−6 M/s. Which of the following would explain a lower rate after another 3 seconds?

A - The concentration of reactants increased while the concentration of product decreased.
B - The concentration of reactants decreased while the concentration of product increased.
C - All concentrations of reactants and products decreased.
D - All concentrations of reactants and products increased.

User Erik Nguyen
by
2.4k points

2 Answers

7 votes
7 votes

Answer:

B. The concentration of reactants decreased while the concentration of product increased.

Step-by-step explanation:

took the test :)

User Kuu
by
3.0k points
18 votes
18 votes

Answer:

B

Step-by-step explanation:

During the first half of the reaction there was an increase in the rate of reaction due to the high concentration of the reactants. But as the reaction continues we witness a decrease in the amount of reactants which lowers the rate.

User Hemamalini
by
3.7k points