3. Classify each reaction as exothermic or endothermic. (4 marks)
a. Energy + SO2(g)  S(g) + O2(g) _________________________________
b. Draw a potential energy diagram for the reaction above:

An endothermic reaction is one in wioch energy is supplied to the system in order to enable the breakdown of bonds. Hence, the reaction vessel feels cool as energy is withdrawn from the surroundings.

The reaction; Energy + SO2(g) -----> S(g) + O2(g) is an edothermic reaction since energy is a reactant in the equation.

Learn more about endothermic reaction: https://brainly.com/question/10373907

3. Classify each reaction as exothermic or endothermic. (4 marks) a. Energy + SO2(g)  S(g) + O2(g) _________________________________ b. Draw a potential energy diagram for the reaction above:

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What is an endothermic reaction?

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3. Classify each reaction as exothermic or endothermic. (4 marks)
a. Energy + SO2(g)  S(g) + O2(g) _________________________________
b. Draw a potential energy diagram for the reaction above: