Question

using enthalpy diagrams. use the enthalpy diagram to answer this question. which arrow(s) represent endothermic reactions?

Explanation:

In an enthalpy - diagram, an endothermic reaction has a positive change in enthalpy (products have higher enthalpy than reactants). Arrows pointing upwards represent an increase in enthalpy. Arrows A and D are pointing upwards, indicating that the products have higher enthalpy than the reactants, which is characteristic of endothermic reactions.

Answer:

A. A and D