Introduction to reaction rates

Question 1

Define chemical kinetics

Answer 1

The STUDY of rates of chemical reactions and the FACTORS affecting them

Question 2

Define rate of chemical reaction

Answer 2

the change in concentration per unit time, measured in units of mol L-1 s-1

Question 3

What is the equation for rate?

Answer 3

rate = -1/ad(A)/dt= -1/bd(B)/dt=1/cd(C)/dt=1/dd(D)/dt

Question 4

what is instantaneous rate?

Answer 4

when the concentration of a reaction is measured at a particular time therefore the SLOPE of the line must be calculated

Question 5

what is the equation for instantanteous rate/ average rate?

Answer 5

-1/a*delta(A)/delta t

Question 6

how is the average rate measured during an experiment?

Answer 6

change in concentration over a FINITE period of time

Question 7

What is the equation for rate of consumption?

Answer 7

d(A)/dt

Question 8

What is the average rate of reaction? (lec 1: N2 + 3H2 to 2NH3)

Answer 8

the fraction of the reactants (eg 1/3) * rate of consumption

Question 9

definition of measurement of reaction rates
3O2 to 2O3;
what is the rate of appearance of O3;
rate of disappearance of O2?

Answer 9

O3 appearance rate: 1/2

O2 disappearnce rate: 1/3