Arrhenius eq

[205192823]

When do I know to use the Arrhenius equation?

[Jiyoon_Hwang_2I]

You should use the Arrhenius Equation when determining the effect of a change in temperature on the rate constant

[MaggieHan1L]

Also when you are looking at activation energy

[504939134]

When you want to know the effect on K with the change in temperature

[zfinn]

it's useful in situations where you want to see how the rate, temperature, and activation energy all relate

[Kaitlyn Ang 1J]

And the ln(k) = -Ea/RT + ln(A) version is useful when you're comparing two temperature's k values. The equation becomes ln(k2/k1) = (Ea/R)((1/T1) - (1/T2))

[Xavier Herrera 3H]

If you're given the activation energy with a catalyst, and the activation energy without a catalyst for the same reaction, you could use the Arrhenius equation to find the ratio between the reaction rates. You would do this by rearranging the Arrhenius equation to find the ratio between k(catalyst) / k(no catalyst)