zero order in rate law


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Vanessa Reyes_1K
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Joined: Fri Sep 28, 2018 12:28 am

zero order in rate law

Postby Vanessa Reyes_1K » Mon Mar 11, 2019 11:40 pm

If a reactant is a zero order reactant, is it included when writing out the overall rate law for the entire reaction?

Jim Brown 14B Lec1
Posts: 62
Joined: Fri Sep 28, 2018 12:28 am

Re: zero order in rate law

Postby Jim Brown 14B Lec1 » Mon Mar 11, 2019 11:52 pm

It is included in the unique rate law but in the overall rate law it is only included if it is greater than zero. If the reactant is zero order then it will be to the power of zero and equal to 1.

Mukil_Pari_2I
Posts: 87
Joined: Fri Sep 28, 2018 12:29 am

Re: zero order in rate law

Postby Mukil_Pari_2I » Tue Mar 12, 2019 12:17 am

In the overall reaction law, the equation would just be the reaction constant.

Kessandra Ng 1K
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Joined: Fri Sep 28, 2018 12:25 am

Re: zero order in rate law

Postby Kessandra Ng 1K » Tue Mar 12, 2019 12:43 am

Just be sure to know that while the reactant is still in the overall reaction equation, when you write out the rate law, it would be [A]^0 (assuming the reaction is zero order with respect to A) - which equals 1, therefore you wouldn't need to include it in the rate law when you're writing it out.

Lauren Huang 1H
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Joined: Fri Sep 28, 2018 12:16 am

Re: zero order in rate law

Postby Lauren Huang 1H » Tue Mar 12, 2019 3:22 pm

You don't need to include it since anything to the zeroth power is equal to one.

Vicky Lu 1L
Posts: 60
Joined: Fri Sep 28, 2018 12:18 am

Re: zero order in rate law

Postby Vicky Lu 1L » Tue Mar 12, 2019 4:55 pm

If a reactant is a zero order reactant, it would not be included in the overall rate law since anything to the 0th power as an exponent would be one. Also since it is a 0th order, changes to the concentration of that reactant would have no effect on the rate and therefore, it make sense that it would not be included in the rate law.

Anand Narayan 1G
Posts: 61
Joined: Fri Sep 28, 2018 12:15 am

Re: zero order in rate law

Postby Anand Narayan 1G » Tue Mar 12, 2019 6:46 pm

In this case, you would not need to include it since any number to the power of zero is one.

Brian Chang 2H
Posts: 65
Joined: Fri Sep 28, 2018 12:17 am

Re: zero order in rate law

Postby Brian Chang 2H » Wed Mar 13, 2019 2:27 pm

It's technically included, but since it is raised to the 0th power it just becomes 1.


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