Unit 4 Kinetics DH Flashcards
1
Q
What is the definition of the rate of reaction?
A
The change in concentration (of any of the reactants or products) with unit time
2
Q
What is ‘The constant of the proportionality in the rate expression’ the definition for?
A
The rate constant
3
Q
What is the slowest step in the reaction mechanism?
A
The rate determining step
4
Q
How would you write the rate equation for 2A+B—–>2C+D?
A
rate=k[A]^2[B]
————–
[C]^2[D]
5
Q
What effect will a catalyst have on the rate constant?
A
None
6
Q
If you increased the temperature of an endothermic reaction, what effect will it have on the rate constant?
A
The rate constant will increase
7
Q
What does [HCOOH] mean?
A
The concentration of methanoic acid
8
Q
What kind of reaction takes in energy from its surroundings?
A
An exothermic reaction
