Answer;
-Exothermic reaction;
-The sign of the energy change is negative (-)
Explanation;
2CuO(s) + C(s) --> 2Cu(s) + CO2(g)
ΔH = ΣΔHf(products) - ΣΔHf(reactants)
ΔH = -393.5kJ - 2(-155.2kJ) = -83.1 kJ
The reaction is exothermic.
-An exothermic process or reaction releases heat, causing the temperature of the immediate surroundings to rise. An endothermic process absorbs heat and cools the surroundings.
