Effect of temperature on rate constants

Question 1

What is the effect of temperature on rate constants?

Answer 1

As temperature increases, the rate increases and the value of K increases

Question 2

Why does increasing temperature, increase the value of K?

Answer 2

• Increasing temperature, shifts the boltzmann distribution to the right and increases the proportion of particles that exceeds EA
• As temperature increases, the particles move faster and collide more frequently
• This therefore increases the rate constant due to activation energy

Question 3

How do you rearrange arrhenius equation?

Answer 3

Ink = -EA/RT + InA
T = kelvin
R = 8.314

Question 4

How do you determine the activation energy from a graph?

Answer 4

Gradient = -EA/R
EA = -Gradient x R

Question 5

How do you calculate A?
A = number of collisions with the correct orientation

Answer 5

The Y intercept is InA
Then do the exponential of A
eA

Question 6

How do you plot a graph to find arrhenius equation?

Answer 6

ink = Y axis
1/T = X axis