18.1 - Orders, rate equations, and rate constants Flashcards Preview

Chemistry - 18 > 18.1 - Orders, rate equations, and rate constants > Flashcards

Flashcards in 18.1 - Orders, rate equations, and rate constants Deck (10):
1

What is the equation for rate of reaction?

Change in concentration / change in time

2

What are the units of rate?

mol dm-3 s-1

3

What are common orders of reaction?

Zero order
First order
Second order

4

How would you show the order of a reactant?

[A]0
[A]1
[A]2

5

How will zero order with respect to the reactant affect the rate?

It doesn't affect the rate of reaction

6

How does first order affect the rate?

If concentration of A is doubled, rate increases by a factor of 2 to the power of 1

7

How does a second order reaction affect the rate?

If the concentration of A is doubled, the rate quadruples

8

State the rate equation

Rate = k [A]m [B]n

9

What is k?

Rate constant

10

How do you work out the overall order of reaction?

Add the powers