Question

question 4 of 15
consider the reaction diagram.
this reaction is
endothermic.
exothermic.
what is the heat of reaction?
δh = kj/mol

Explanation:

Step1: Determine the type of reaction

In an endothermic reaction, the energy of the products is higher than the energy of the reactants. In an exothermic reaction, the energy of the products is lower than the energy of the reactants. Looking at the reaction diagram, the energy of the products (final energy level) is higher than the energy of the reactants (initial energy level), so the reaction is endothermic.

Step2: Calculate the heat of reaction ($\Delta H$)

The heat of reaction ($\Delta H$) is calculated as the energy of the products minus the energy of the reactants. From the diagram, the energy of the reactants is approximately $25\ kJ/mol$ and the energy of the products is approximately $50\ kJ/mol$. So, $\Delta H=50 - 25$.

Answer:

$\Delta H = 25\ kJ/mol$