rates of reaction

Question 1

rate of reaction

Answer 1

the change in concentration of reactant or product with respect to time

Question 2

order of reaction

Answer 2

the power to which the concentration of a reactant is raised to in the rate equation

Question 3

overall order of reaction

Answer 3

the sum of the powers to which the concentration terms are raised to in the rate equation

Question 4

rate constant

Answer 4

the proportionality constant that links rate of reaction to concentration in the rate equation

Question 5

rate determining step

Answer 5

the slowest step in the mechanism of a reaction

Question 6

deduce simple rate equation

Answer 6

rate = conc/time

Question 7

first order

Answer 7

is a is doubled rate is doubled

Question 8

second order

Answer 8

if a is doubled rate is quadrupled (ie square)

Question 9

third order

Answer 9

if a is doubled rate is x8 (ie cubed)

Question 10

factors effecting rate

Answer 10

temperature (faster more successful collision greater kinetic energy)
pressure (more successful collisions as particles are closer together in a given period of time)
concentration (more reacting particles present in the same volume)
catalyst (provides an alternative reaction pathway of lower activation energy)