## K value at a specific temp

Goyama_2A
Posts: 107
Joined: Sat Aug 24, 2019 12:17 am

### K value at a specific temp

In the “skills you have mastered” section of 5J, it says we should be able to predict the value of K at one temperature from its value at another temperature. Lavelle excluded part of this section from the assigned reading, but I just wanted to make sure. Should we be able to do this? Have we addressed it at all in lecture?

Amy Kumar 1I
Posts: 114
Joined: Thu Jul 11, 2019 12:15 am

### Re: K value at a specific temp

The basic idea is that K values change based on the temperature.

AKatukota
Posts: 100
Joined: Thu Jul 25, 2019 12:18 am

### Activity

What should we know about the activity of a reaction?

Posts: 113
Joined: Thu Jul 11, 2019 12:16 am

### Re: Activity

AKatukota wrote:What should we know about the activity of a reaction?

We talk about activities when we talk about K. When we use partial pressures and concentrations to calculate K, we're actually using approximations. In reality, K is calculated by using activities.

ayushibanerjee06
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### Re: K value at a specific temp

When the temperature is increased, K is higher. When the temperature is decreased, K is lower.

Leonardo Le Merle 1D
Posts: 56
Joined: Wed Feb 27, 2019 12:16 am

### Re: K value at a specific temp

Depending on the type of reaction (endothermic or exothermic), temperature affects K differently, increasing it for endothermic ones and decreasing it for exothermic ones.

Jasmine Vallarta 2L
Posts: 102
Joined: Sat Aug 17, 2019 12:18 am

### Re: K value at a specific temp

we only have to predict the K value at a temperature change for exo/endothermic reactions. That's all that was covered in lecture

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