(Solved): Exothermic vs. Endothermic reactions The graph below shows the changes in enthalpy for two chemical ...

Exothermic vs. Endothermic reactions The graph below shows the changes in enthalpy for two chemical reactions (a) and (b): $$\mathrm{H}$$ Fill in the blanks with the answers to the following questions. For the reaction shown in graph (a): 1. Is $$?\mathrm{H}$$ positive or negative? 2. In terms of the enthalpy this process can be classified as For the reaction shown in graph (b): 1. Is $$?\mathrm{H}$$ positive or negative? 2. In terms of the enthalpy the process can be classified as 3. Which of the two reactions is spontaneous?