Question

For an endothermic reaction, how will the value for Keq change when the temperature is increased?

Answer 1

a) Keq is not effected by temperature.

b) Keq will decrease.

c) Keq will increase.

d) It will be reduced by half.

I know it's either B or C .

Answer 2

since the reaction is endothermic, "heat" is treated just like a \(reactant\), so it will follow the same rules of shifting equilibrium

Answer 3

I understand that because the temp is increased it will shift towards the product. I just don't know if that means Keq will increase or decrease?

Answer 4

I think the answer is C ?

Answer 5

@aaronq @amistre64 do you guys know?

Answer 6

Here's a hint: \(K_{eq}\) is the equilibrium constant, the ratio of the products to reactants.


\(\sf K_{eq}=\dfrac{[products]}{[reactants]}\)

Answer 7

I understand all that. I know that when the temp increases Keq is shifted towards the products. I just don't know weather or not that means Keq will increase or decrease?

Answer 8

I'll make it more obvious.

if initially at given temperature, [products]=1 and [reactants]=1, then

\(\sf K_{eq}=\dfrac{[products]}{[reactants]}=\dfrac{1}{1}=1\)

at a higher temp [products]=1.5 and [reactants]=0.5, then

\(\sf K_{eq}=\dfrac{[products]}{[reactants]}=\dfrac{1.5}{0.5}=3\)

Answer 9

thank you! It is C, correct? hahah, I thought it was C.

Answer 10

yeah. next time try to use numbers, it makes things clearer

Answer 11

no prob by the way