The minimum amount of energy that colliding particles need to cause a reaction
1 of 15
How do you know if a reaction is FIRST order?
As the initial concentration is doubled, the Initial rate doubles too
2 of 15
How do you know if a reaction is SECOND order?
As the initial concentration is doubled, the initial rate is quadrupeled
3 of 15
How do you know if a reaction is ZERO order?
As the initial concentration is doubled, the initial rate remains the same.
4 of 15
How do you determine overall order of reaction?
Add up all the "orders" in the rate equation"
5 of 15
How may a Rate equation look for ZERO, FIRST AND SECOND order respectively
Zero: No symbol, First: [X], Second: [X]2
6 of 15
What are the key features of the Maxwell-Boltzman curve?
1) The area iundet the curve is proportional to the total number of molecules in a sample 2) the mean energy does not occur at the peak, but to the right of it
7 of 15
What is a rate-limiting step?
The step of the process which determines the whole processes rate
8 of 15
Which order is more likely to have a rate-determining step?
first order, due to the proportions of rate and concentration being the same
9 of 15
What happens to the rate of a step if it has high activation energy?
It is low, due to a small fraction having energy to react.
10 of 15
What happens in an equilibrium if the concentration of an acid is increased?
The concencentration of H+ ions increases and the EQ. shifts to the right
11 of 15
What happens in an equilibrium if the concentration of an acid is increased?
H+ ions react with OH- ions and perform neutralisation and the EQ. shifts to the right.
12 of 15
How do you write the Kc equation?
Kc= [C]c [D]d / [A]a [B]b
13 of 15
Why do catalysts not change Kc?
The forward and backwards reactions are increased at the same ratio
14 of 15
How can an increase in temperature change Kc?
The value of Kc increases if the endothermic process is favoured, and the Kc will decrease if the Exothermic process is favoured.
15 of 15
Other cards in this set
Card 2
Front
How do you know if a reaction is FIRST order?
Back
As the initial concentration is doubled, the Initial rate doubles too
Comments
No comments have yet been made