Average rate  [ENDORSED]

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Sacci Mohan
Posts: 16
Joined: Fri Sep 25, 2015 3:00 am

Average rate

Postby Sacci Mohan » Mon Feb 15, 2016 8:50 pm

Why is it that at times rates are negative? Will it always be the reactants?

dbalestra4F
Posts: 19
Joined: Fri Sep 25, 2015 3:00 am

Re: Average rate

Postby dbalestra4F » Mon Feb 15, 2016 8:54 pm

Rates are negative because the concentration of reactants will be decreasing because the reactants are turning into products. When the reactants are being converted into products the rate will be negative.

Dylan Mai 1D
Posts: 70
Joined: Sat Jul 22, 2017 3:00 am

Re: Average rate

Postby Dylan Mai 1D » Thu Mar 01, 2018 9:03 pm

Although usually, you report the rate as positive

Julia Cheng 2J
Posts: 31
Joined: Thu Jul 13, 2017 3:00 am

Re: Average rate

Postby Julia Cheng 2J » Fri Mar 02, 2018 10:48 am

As long as the forward reaction is progressing faster than the reverse reaction, the rate of the change in concentration of reactants will be negative because they are being consumed.

Laura Riccardelli
Posts: 49
Joined: Fri Sep 29, 2017 7:04 am

Re: Average rate

Postby Laura Riccardelli » Fri Mar 02, 2018 12:23 pm

Would we need to know if the reaction is proceeding in the forward direction based on the k value?

Chris Lamb 1G
Posts: 58
Joined: Fri Jun 23, 2017 11:39 am

Re: Average rate

Postby Chris Lamb 1G » Fri Mar 02, 2018 1:07 pm

We assume that the reaction is going in the forward direction

Emily Mei 1B
Posts: 50
Joined: Fri Sep 29, 2017 7:04 am

Re: Average rate  [ENDORSED]

Postby Emily Mei 1B » Fri Mar 02, 2018 1:08 pm

^And because we assume this, we also assume that products are being removed from the system in order to ignore the reverse reaction.


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