## derivations

Sarah Blake-2I
Posts: 153
Joined: Fri Aug 30, 2019 12:16 am

### derivations

What equations should we know how to derive in the kinetics section?

Lara Kristine Bacasen 1L
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Joined: Sat Jul 20, 2019 12:16 am
Been upvoted: 1 time

### Re: derivations

In lecture I think he derived the first, second, and zero rate laws. I think he said in lecture that he wasn't going to do it for the Arrhenius equation. I'm not entirely sure though.

DLee_1L
Posts: 103
Joined: Sat Aug 17, 2019 12:17 am

### Re: derivations

Confirmed, Professor Lavelle did not go over the derivations for Arrhenius, however, he did go over the derivations for 0,1,and 2nd order reactions and their half-life reactions. I don't think they'll be essential to know, but a good foundation to how things work if there is a concept heavy question on the final.

aishwarya_atmakuri
Posts: 101
Joined: Sat Jul 20, 2019 12:15 am

### Re: derivations

I would focus on the derivations that were given in class, specifically those for 1, 2, and 0 order.

Caroline Zepecki
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Joined: Fri Aug 09, 2019 12:16 am

### Re: derivations

Make sure to look at your notes for the first rate, second rate, and zero rate reactions. They're all pretty similar but it's important to know where they come from, especially when looking at the half life equations.

Matt F
Posts: 100
Joined: Sat Aug 17, 2019 12:17 am

### Re: derivations

Derivations can also be helpful to know if you need to manipulate formulas on a test only given certain information. I think knowing the relationship between [A], ln[A], and 1/[A] and time (t) is also useful (specifically the graphs and how they relate to slope)

Jasmine W 1K
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Joined: Sat Sep 07, 2019 12:18 am

### Re: derivations

In lecture, Dr. Lavelle went over the derivations for the first, second, and zeroeth order rate laws and their half-life reactions. He did not go over the derivation for the Arrhenius equation though.

Lauren Stack 1C
Posts: 100
Joined: Sat Aug 17, 2019 12:18 am

### Re: derivations

On the Kinetics outline Lavelle lists:
Know how to derive the differential and integrated rate laws for zero, 1st and 2nd order reactions
Use the Arrhenius equation and rate constants measured at different temperatures to determine activation energy.
Use the Arrhenius equation and the activation energy to find the rate constant at a given temperature

He explicitly lists to know the derivation of the rate laws, but only says to know how to use the Arrhenius equation.

Tahlia Mullins
Posts: 105
Joined: Thu Jul 25, 2019 12:15 am

### Re: derivations

I believe that knowing the derivation of the rate laws and even the half lives is important to develop a proper understanding, however, Dr. Lavelle did not go over the derivation of the Arrhenius equation in class.

Mitchell Koss 4G
Posts: 128
Joined: Sat Jul 20, 2019 12:17 am

### Re: derivations

I don't think you need to know how to derive any. He has said "know how to derive" on every outline but has never asked for just a derivation on a test.