Question

are these endothermic or exothermic?


2H2O2 (l) ¨ 2H2O(l) + O2(g)
∆H = -190 kj


C(s) + H2O (g) ¨ CO (g) + H2 (g)
∆H = +113


A negative delta H means the heat is given up by the reaction. A + delta H means the heat is added to the reaction.

thanks

Answer 1

to this, the first reaction is exothermic and the second reaction is endothermic.