K Expression for Reverse Reaction

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Chloe Alviz 1E
Posts: 102
Joined: Sat Aug 17, 2019 12:17 am

K Expression for Reverse Reaction

Postby Chloe Alviz 1E » Sun Jan 12, 2020 10:16 pm

When we write the K expression of a reverse reaction, would we flip the products or reactants around? Or would the expression remain the same?

ASetlur_1G
Posts: 101
Joined: Fri Aug 09, 2019 12:17 am

Re: K Expression for Reverse Reaction

Postby ASetlur_1G » Sun Jan 12, 2020 10:19 pm

K of the reverse reaction would be the reciprocal of K of the forward reaction so the products and reactants would be flipped.

Eesha Chattopadhyay 2K
Posts: 104
Joined: Fri Aug 09, 2019 12:16 am

Re: K Expression for Reverse Reaction

Postby Eesha Chattopadhyay 2K » Sun Jan 12, 2020 10:24 pm

If you aren't using the K of the forward reaction, then yes you just switch the products and reactants in the expression.

Venus_Hagan 2L
Posts: 104
Joined: Fri Aug 02, 2019 12:16 am

Re: K Expression for Reverse Reaction

Postby Venus_Hagan 2L » Sun Jan 12, 2020 11:33 pm

The expression would be flipped because the products always go on the top and the reactants on the bottom. In a reverse reaction, the products become the reactants and their concentration(s) goes on the bottom now. Similarly, the reactants become the products and their concentration(s) will go on the top.


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