Question

For an exothermic reaction, the enthalpy of the reaction is always: a)Positive b)Negative c)Zero d)Can't say

Answer 1

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B) Negative

Explanation:

Exothermic Reactions

In an exothermic reaction, energy is released because the total energy of the products is less than the total energy of the reactants. For this reason, the change in enthalpy, ΔH , for an exothermic reaction will always be negative.

Answer 2

Explanation:

1. exothermic and endothermic reactions causes energy level differences and therefore differences in enthalphythe sum of all potential and kanatc energy