Chemistry 9701 · AS & A Level · Chemical energetics

Chemical energetics — practice question

Every reactant and product in an exothermic reaction is in the gaseous state. Which statement about this reaction is correct?

  • AThe total bond energy of the products is less than the total bond energy of the reactants, and $\Delta H$ for the reaction is negative.
  • BThe total bond energy of the products is less than the total bond energy of the reactants, and $\Delta H$ for the reaction is positive.
  • CThe total bond energy of the products is more than the total bond energy of the reactants, and $\Delta H$ for the reaction is negative.
  • DThe total bond energy of the products is more than the total bond energy of the reactants, and $\Delta H$ for the reaction is positive.

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