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1. Please study the energy diagram below. This diagram is for the electrolytic decomposition of sodium chloride (NaCl) in water (H₂O) which produces sodium hydroxide (NaOH) and hydrogen chloride (HCl).

A graph. The x-axis is labeled Reaction pathway. The y-axis is labeled Energy. A dashed horizontal line labeled Reactants is plotted at about one-fifth across the y-axis. A dashed horizontal line labeled Activated complex is plotted near the top of the y-axis. A line labeled Products is plotted on the graph. Products starts at the origin of Reactants, extends horizontally to the right, curves upward to the right with downward opening until Activated complex, slightly curves downward to the right, and extends horizontally to the right. The distance between Reactans and Activated complex is labeled (a).

• Write the balanced equation for this reaction.
• Explain what information is provided by this diagram. What does it tell us about the reaction?
• Draw what the activated complex or transition state might look like.
• Is this reaction exothermic or endothermic? How do you know?