Rate of reaction 112-113

Question 1

Define rate of reaction.

Answer 1

Rate of reaction is the change in concentration of a reactant or product per unit time.

Question 2

How is the rate of a reaction calculated and what are its units?

Answer 2

rate = (change in concentration of reactant or product)/(time for the change to take place) Units of rate = mol dm^-3s^-1

Question 3

The rate of a reaction can be determined by measuring the concentration of a reactant, or product, at time intervals during the course of a reaction. The experimental results are processed and a graph is plotted of concentration against time.

At any instant in time, how can you calculate the rate?

Answer 3

At any instant of time, the rate is equal to the slope of the curve.

Question 4

Draw concetration of reactant vs time for a reaction.

Answer 4

Question 5

Define initial rate of reaction.

Answer 5

Initial rate of reaction is the change in concentration of a reactant, or product, per unit time at the start of the reaction when t = 0.

Question 6

Draw concentration of product vs time graph for a reaction.

Answer 6