Doubling Concentrations


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David Sarkissian 1K
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Doubling Concentrations

Postby David Sarkissian 1K » Thu Mar 14, 2019 6:00 pm

Does doubling concentrations double the order of a reaction or does it just increase the order by 1?

juliasloan_4g
Posts: 67
Joined: Fri Sep 28, 2018 12:28 am

Re: Doubling Concentrations

Postby juliasloan_4g » Thu Mar 14, 2019 6:20 pm

You can only find orders based on experimental data so this depends on the reaction. If you double the concentration and nothing happens to the rate, this is a zero order reaction. If you double the concentration and the rate also doubles, this is a first order reaction. If you double the concentration and the rate is squared this is a second order reaction.

Joonsoo Kim 4L
Posts: 61
Joined: Fri Sep 28, 2018 12:29 am

Re: Doubling Concentrations

Postby Joonsoo Kim 4L » Fri Mar 15, 2019 10:52 am

Changing the concentration in experiments can show you which order the reaction is, but it doesn't change the order of the reaction. In other words, in rate=k[A]^n, changing [A] does not change n.

MichelleRamirez_2F
Posts: 63
Joined: Fri Sep 28, 2018 12:28 am

Re: Doubling Concentrations

Postby MichelleRamirez_2F » Fri Mar 15, 2019 11:21 am

If you are talking about a first order reaction the doubling of a reactant means the reaction rate is doubled. If it's a second order reaction then the reaction rate is increase by a factor of x^2, where x would be your reaction rate.


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