Reaction Orders

Question 1

What are reaction orders

Answer 1

Reaction order tells us how the conc of the reactants affect the rate

Question 2

Double the reactant conc, rate stays the same

Answer 2

Reactant has an order of 0 doesn’t change the rate

Question 3

Double the reactant conc, rate also doubles

Answer 3

Reactant has an order of 1 changing conc affects rate. Directly proportional

Question 4

Double the reactant conc, rate quadruples

Answer 4

Reactant has an order of 2 changing conc affects the rate

Question 5

Overall order

Answer 5

Sum of all orders in a reaction

Question 6

Finding orders of reactants in a reaction

Answer 6

Monitor how each reactant affects the rate
Can continuously monitor a reactant and draw a conc-time graph then a rate-conc graph
Or use the initial rate method find how rate changes when conc of each reactant change

Question 7

Finding orders part 2

Answer 7

Each reactant see if they affect rate by excluding the others
0 order no effect on rate
1st order affect rate proportional
2nd order affect rate doubling it

Question 8

Finding reaction orders using graphs

Answer 8

Conc time graph find grad at specific points gives points for a rate time graph
Smooth curve
Also plot rate-conc graph
Shape of rate-conc graph tell us order of reactant

Question 9

Rate-conc graphs

Answer 9

Zero order line is horizontal ROR no reaction
1st order graph increases proportionally y=x
2nd order graph increases exponentially