First order

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Gabriela Carrillo 1B
Posts: 53
Joined: Fri Sep 29, 2017 7:04 am

First order

Postby Gabriela Carrillo 1B » Sun Mar 04, 2018 11:08 pm

When given a chart, would we identify a reactant as being first order if when its molarity is doubled the rate is doubled?

Justin Chu 1G
Posts: 52
Joined: Thu Jul 13, 2017 3:00 am
Been upvoted: 1 time

Re: First order

Postby Justin Chu 1G » Sun Mar 04, 2018 11:09 pm

Only if all the other reactants remain constant. Otherwise, you would be unable to tell which change in concentration is affecting the rate and how.

Jiun Yue Chung 2I
Posts: 27
Joined: Fri Sep 29, 2017 7:06 am

Re: First order

Postby Jiun Yue Chung 2I » Sun Mar 04, 2018 11:10 pm

Generally if the concentration of a reactant doubles along with the reation's initial rate, it should be first order reaction. However, always do the arithmetic just to be sure :)

Nora 1F
Posts: 46
Joined: Fri Sep 29, 2017 7:04 am

Re: First order

Postby Nora 1F » Sun Mar 04, 2018 11:13 pm

Justin is correct! So just to clarify, a reactant is first order if when all other reactant concentrations are held constant and the concentration reactant of interest is doubled, the rate doubles.

Josh Moy 1H
Posts: 58
Joined: Thu Jul 13, 2017 3:00 am

Re: First order

Postby Josh Moy 1H » Mon Mar 05, 2018 10:40 pm

If the other reactant's concentrations remain constant then yes it would be first order

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