Sapling #15 Wk.9-10

[IsabelMurillo3K]

Calculate the activation energy, Ea , in kilojoules per mole for a reaction at 69.0 ∘C that has a rate constant of 0.298 s−1 and a frequency factor of 8.07×1011 s−1 .
Hey guys! I was wondering if anyone could explain what formula is necessary to solve this problem?
Thank you!

[Grace_Remphrey_2J]

For this problem, I used the Arrhenius equation to calculate the activation energy but rearranged it to solve for Ea. Hope this helps!

[Olivia Yang 3J]

For this problem use the arrhenius equation k = Ae^−EaRT where A is the frequency factor 8.07×1011. You should convert the temperature into Kelvin from Celsius, rearrange the equation to kA = e^−EaRT and take the natural log of both sides so that your equation becomes Ea =−RTln(k/A). You can then input the given values for R, T, A, and k and solve for the activation energy. Lastly, you should convert your answer from joules to kilojoules

[Gicelle Rubin 1E]

For this problem use the arrhenius equation k = Ae^−EaRT where A is the frequency factor 8.07×1011. You should convert the temperature into Kelvin from Celsius, rearrange the equation to kA = e^−EaRT and take the natural log of both sides so that your equation becomes Ea =−RTln(k/A). You can then input the given values for R, T, A, and k and solve for the activation energy. Lastly, you should convert your answer from joules to kilojoules

Thank you!!! I was stuck on this question :,)

[Ally M]

For this question, I first took the natural log of both sides, then the common log, and then just substituted the rest of the values into the Arrhenius equation!

[RalphGuevarra]

For this problem use the arrhenius equation k = Ae^−EaRT where A is the frequency factor 8.07×1011. You should convert the temperature into Kelvin from Celsius, rearrange the equation to kA = e^−EaRT and take the natural log of both sides so that your equation becomes Ea =−RTln(k/A). You can then input the given values for R, T, A, and k and solve for the activation energy. Lastly, you should convert your answer from joules to kilojoules

This is so helpful, thank you!

[405718358]

For this problem use the arrhenius equation k = Ae^−EaRT where A is the frequency factor 8.07×1011. You should convert the temperature into Kelvin from Celsius, rearrange the equation to kA = e^−EaRT and take the natural log of both sides so that your equation becomes Ea =−RTln(k/A). You can then input the given values for R, T, A, and k and solve for the activation energy. Lastly, you should convert your answer from joules to kilojoules

This is a really helpful explanation, i was stuck on this questions for a really long time thank you for the help !