CI 4 Flashcards
1
Q
How do you work out initial rate of reaction on a graph?
A
1) Draw a tangent on the graph at the point t=0
2) measure the gradient
2
Q
Rate equation for
A + B -> products
Given A is second order
B is first order
A
Rate = k[A]²[B]
3
Q
What does increasing temperature by 10C do to the rate?
A
Doubles it
4
Q
What is the unit for Ea (activation energy)?
A
jmol-1
5
Q
What is the unit for temperature in the Arrhenius equation?
A
K
Degrees Celsius + 273
6
Q
What is the Arrhenius equation in the form Y = Mx + c?
A
LnK. = -Ea/r X 1/T + LnA
7
Q
Which way should the curve on a Arrhenius graph slope?
A
Downwards
8
Q
What is the Y intercept in the Arrhenius equation?
A
LnA
9
Q
What happens when a condition change results in a higher proportion of the product?
A
Rate of reaction decreases
