Textbook Question 5J.11

[505671751]

Hi! On textbook question 5J.11 (question attached down below), I'm having trouble figuring out part b.
I was wondering if someone could explain how temperature effects equilibrium when there are halogens involved/what that means! Thanks :)

[605775499]

Can't really speak to the halogen thing, but bond breaking is an endothermic process because it requires energy! (adding heat favors products)

[Alba Mendis 1A]

Hi! Like the post said above, breaking the bond of X2 requires energy so it's endothermic. I think that X being a halogen implies that X2 is very stable! Halogens each have 7 valence electrons, and they readily form diatomic molecules to acquire that one missing electron. Therefore, breaking that bond definitely requires a lot of energy, meaning it's definitely endothermic. You can then conclude that if the reaction is endothermic, more products are formed as temperature increases (and K increases). Therefore, the reaction would favor products. I hope this was helpful!