Question

What is generally true about rate over the course of a reaction?

Rate decreases because there are more collisions as the reaction progresses.
Rate increases because there are more collisions as the reaction progresses.
Rate decreases because the concentration of reactants decreases.
Rate increases because the concentration of products increases.

Answer 1

I'll go for the 3rd option

Answer 2

Thanks why thou?

Answer 3

Hmm..
concentration of reactant decreases as time increases but number of collision remains the same

Answer 4

What do you think @chmvijay

Answer 5

@Abhisar

Answer 6

Both users are offline :( agree with you though. Thanks!

Answer 7

You're welcome

Answer 8

yes @eric_d is correct !