Gen chem question 2

[txlonghorn]

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From Chad quiz #5, number 1:

Which of the following increases the value of the equilibrium constant for the rxn:

A + B C + D. H = 178J

The answer is increasing the temp. Why?

I understand that temp is the only thing that affects K, but temp in this case would show up under reactants right, as it is an endergonic process? So if you decrease the temp, the K value goes up - simple math. Please help, I have my test in a few days!

 

[cm8a12321]

From Chad quiz #5, number 1:

Which of the following increases the value of the equilibrium constant for the rxn:

A + B C + D. H = 178J

The answer is increasing the temp. Why?

I understand that temp is the only thing that affects K, but temp in this case would show up under reactants right, as it is an endergonic process? So if you decrease the temp, the K value goes up - simple math. Please help, I have my test in a few days!

For the equilibrium K, temp is the only thing that affects it. For this equilibrium rxn, you know that this is an endothermic rxn. If you increased temp, LeChatelier's Principle states that increasing temp for an endothermic rxn will favor the rxn to the right (K>1). However, if you go the other way around, it will favor the rxn to the left (K<1).

Do not overthink it.

 

[txlonghorn]

Duh! Lol. Man, these 10 hour days are killing my mind. Lol