Half life

[Fdonovan 3D]

How do you calculate the half life of a zero order rxn?

[Matthew Chan 1B]

t_1/2=[A]₀/2k

[My-Lan Le 1L]

You would use this equation for half life: t1/2=[A]0/2k. But what this equation is saying is that a half life zero order reaction is dependent on the initial concentration of A.

[Emmeline Phu 1G]

Hi! As mentioned in lecture today, you would solve for the half life of a zero order reaction by using the equation t1/2= [A]0/ 2K. This half life equation indicates that the half life is dependent on the initial concentration of the reactant, [A]0, since k which represents the maximum rate of the enzyme/catalyst is held constant. Hope this helps! :)

[Muskaan Abdul-Sattar]

The equation for half-life, as mentioned in the lecture, would be t1/2=[A]0/2k!

[KhanTran3K]

To calculate a half-life for a zero order reaction, the equation would be t(1/2)=[A]0/2k. In lecture yesterday, he derived this from the integrated rate law for zero order. It is important to note that the half life zero order rate depends on the concentration of [A] initial.

[Annie Liang 3D]

The half life would be t1/2=[A]0/2k

[Darlene Lien 3E]

The half-life of a zero-order reaction is t1/2=[A]0/2k. This is also in Wednesday's lecture (Lecture 23). Hope this helps!

[Gigi Elizarraras 2C]

To calc the half life use the equation t1/2=[A]0/2k. but you must know the INITIAL concentration:) hope this helps!

[Sophia Kalanski 1A]

[A]o/2K =t(1/2) is the equation and this shows that the half life of a zero order reaction is dependent on the initial concentration of A

[Alexandra Ahlschlager 1L]

To calculate half life of a zero order reaction, you would use the equation: t1/2 = [A0] / 2k where A0 is the initial concentration and k is the rate constant.

[Arnav Saud 2C]

In order to calculate half life of a zero order reaction, you would want to use the t_1/2 = [A]₀/2k.

[Justin Nguyen 3E]

You find the half-life of a zero order equation you would use t1/2=[A]0/2k and the half life of a reactant decreases as its concentration decreases

[Nathan Chu 3H]

To calculate the half-life of a zero order reaction, use the equation t1/2=[A]0/2k

[Rob Tsai 2F]

You use the equation t1/2 = [A]0/2k, with [A]0 being the initial concentration of the reaction and k being the reaction rate constant.

This is derived from the zero order integrated rate law, where [A] = -kt + [A]0. The derivation is as follows:

[A] = -kt + [A]0
(1/2)[A]0 = -k(t1/2) + [A]0 (At t1/2, [A] = (1/2)[A]0) or (At the half life of the reaction, the concentration of the reactant should be half the initial)
-(1/2)[A]0 = -k(t1/2) (Combine like terms)
t1/2 = [A]0/2k (Solve for t1/2)

Hope this helps!

[Taylor Newville 1C]

The half life for a zero order reaction is calculated by dividing the initial concentration of the reactant by 2 times the rate constant.
t1/2=[A]0/2k

[Bella Wachter 1A]

You would use the equation t1/2 = [A]0 / 2k

This reaction indicates that the larger the rate constant (k) gets, the shorter the half-life becomes. This makes sense because the larger the rate constant, the faster the reaction occurs, meaning it takes less time for the reactant concentration to decrease to half its original molarity.

This reaction also indicates that the half-life of a zero order reaction depends on the initial concentration of the reactant.

[Grecia Velasco 1G]

How do you calculate the half life of a zero order rxn?

Dr. Lavelle gave us the equation in class. It is t1/2=[A]0/2k for the half life of a zero order rxn.

[Kiana Tashakori 1D]

Hi! You would just use the equation t1/2= [A]0/2K to calculate the half life of a zero order reaction.

[Justin Lin 1B]

We would use the equation t1/2 = [A]o / 2k. This is also in our constants and formula sheet

[Chinyere Okeke 2J]

To calculate the half-life of a zero-order reaction we use the equation: t1/2=[A]0/2k.

So in order to calculate it, we need to know the initial concentration of the reactant and the rate constant of the reaction. And I assume we might not know if a reaction is zero-order so we would need to be able to determine the order of the reaction given experimental data.