kinetics 2

Question 1

what changes in the rate reaction as you increase the temperature?

Answer 1

the rate constant, k, increases. this increases the rate of reaction

as a result if we are investigating the affect of changing the affect or A or B, it is important to keep the temperature constant

Question 2

how does a catalyst affect the rate constant?

Answer 2

a catalyst provides an alternative reaction pathway with a lower activation energy so it increases the value of the rate constant, k

Question 3

finding the order of reaction

Answer 3

the order of reaction for a species can also be calculated using the graphical method.

in this method the reaction is carried out once and the concentration of the reactant are measured at different times. a concentration time graph is drawn and tangents to the graph are drawn. the gradient of the tangents are the rate of reaction.