Group 2

Question 1

what’s the definition of rate of reaction

Answer 1

change in concentration
————————————
time

Question 2

what’s units for rate of reaction

Answer 2

mol dm-3 s-1

Question 3

what’s definition for order of reaction

Answer 3

power of concentration term (in rate equation)

Question 4

what’s zero order

Answer 4

as concentration changes , the rate remains the same

Question 5

what’s first order

Answer 5

as concentration changes , rate changes by that same factor

Question 6

what’s second order

Answer 6

as concentration changes , the rate changes by that factor squared

Question 7

what do we need to do before any orders can be found

Answer 7

before any orders can be found , an initial known concentration is used and the initial rate of reaction is measured .

the experiment is then repeated with different initial concentrations and new initial rates are measured