Reverse reaction

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Clara Cho 2K
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Joined: Wed Sep 18, 2019 12:18 am

Reverse reaction

Postby Clara Cho 2K » Wed Jan 08, 2020 11:28 am

In an equilibrium reaction, when does the reverse reaction begin?

Wendy 1E
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Re: Reverse reaction

Postby Wendy 1E » Wed Jan 08, 2020 12:03 pm

The reverse reaction occurs when Q>K. This occurs when there is an abundance of products and not enough reactants.

Emma Popescu 1L
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Re: Reverse reaction

Postby Emma Popescu 1L » Wed Jan 08, 2020 3:11 pm

Based on le Châtelier’s Principle, when we make changes to a reaction at equilibrium, the equilibrium will respond by trying to undo the change. For example, if the concentration of products increases, then the reaction forming reactants is favored (reverse reaction). Additionally, if the forward reaction is exothermic and the temperature is increased, then the endothermic reverse reaction will be favored.

Keya Jonnalagadda 1A
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Re: Reverse reaction

Postby Keya Jonnalagadda 1A » Wed Jan 08, 2020 3:46 pm

Just to clarify, the reverse reaction can only occur when there is some amount of products to turn back into reactants. So, the reverse reaction cannot begin until the forward reaction has produced some products. After that, the reverse reaction will continue to occur, even while the reaction is at equilibrium, and it will be favored when Q>K.

Madeline Phan 1E
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Re: Reverse reaction

Postby Madeline Phan 1E » Wed Jan 08, 2020 4:08 pm

The reverse reaction begins at the time when q is greater than k and there are more products than reactants.

Harry Zhang 1B
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Re: Reverse reaction

Postby Harry Zhang 1B » Wed Jan 08, 2020 7:19 pm

The reverse reaction will begin when Q is larger than K, because in order for Q to approach K, it needs to get smaller, and the only way to do that is to make the denominator of the Q expression, or the concentration of reactants, higher.

Lauren Tanaka 1A
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Re: Reverse reaction

Postby Lauren Tanaka 1A » Wed Jan 08, 2020 8:07 pm

The reverse reaction will occur when Q is greater than K. When this happens the products are more abundant than the reactants in the reaction.


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