Imagine a graph. The x-axis is labeled "Time" and is measured in seconds, and the y-axis is labeled "Potential Energy" and is measured in kilojoules. The slope starts at 0 seconds with a plateau at 25 kJ. This plateau is labeled "Reactants." The slope then rises to a peak labeled "Activation Energy" at 78 kJ. Finally the slope drops to a plateau at 14 kJ and is labeled "Products."

Question

What does the graph described above represent?

Responses-

a- an endothermic reaction

b- an exothermic reaction

c- a phase change graph

d- rate of Reaction graph

Answer 1

b- an exothermic reaction