Temperature change

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Gerald Bernal1I
Posts: 102
Joined: Thu Jul 11, 2019 12:16 am

Temperature change

Postby Gerald Bernal1I » Mon Jan 13, 2020 11:50 pm

Why does temperature change the K value, does it have to do with changing reaction rate?

nicolely2F
Posts: 149
Joined: Sat Sep 14, 2019 12:17 am

Re: Temperature change

Postby nicolely2F » Mon Jan 13, 2020 11:56 pm

Increasing the temperature makes the reaction environment more energetic, and this extra energy is used in breaking chemical bonds, which speeds up reaction. It affects K because the formation of product may require heat (endothermic), so if the temperature raises then the forward reaction will be favored and the concentrations at equilibrium will change.

ALegala_2I
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Joined: Thu Jul 11, 2019 12:17 am

Re: Temperature change

Postby ALegala_2I » Tue Jan 14, 2020 9:48 am

Why do changes in concentration, pressure, and volume have no effect on the K value?

Phuong Tran 1G
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Re: Temperature change

Postby Phuong Tran 1G » Tue Jan 14, 2020 9:51 am

If the temperature increases, would the value of K increase too?

Marni Kahn 1A
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Re: Temperature change

Postby Marni Kahn 1A » Tue Jan 14, 2020 9:55 am

ALegala_2I wrote:Why do changes in concentration, pressure, and volume have no effect on the K value?


The constant K is temperature-dependent, meaning that only changes in temperature will affect the value of K.

Katie Kyan 2K
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Re: Temperature change

Postby Katie Kyan 2K » Tue Jan 14, 2020 11:51 am

Phuong Tran 1G wrote:If the temperature increases, would the value of K increase too?

When changing temperature the value of K will increase or decrease depending on whether the reaction is endothermic or exothermic. If the forward reaction is exothermic, increasing the temperature shifts the reaction to the left which means the value of K will decrease. Conversely, if the forward reaction is endothermic, increasing temperature will shift the reaction to the right meaning that K will increase.


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