why is it that for pressure change, Kc remains constant, while for temperature change the Kc changes?

Answer 1

Kc remains constant when pressure changes because because the pressure affects the whole system and pressure is not produced as a product or a reactant

but Kc changes as the temperature changes because some reactions are endotermic and some are exothermic. this means the when a reaction is endothermic, you have to put in heat, meaning that it is a reactant and when it is exothermic heat is released, meaning heat comes out as product.

so if the temperatute changes, so does the Kc as of La Chatlier's Principle