Chemistry 0620 · IGCSE · Exothermic and endothermic reactions

Exothermic and endothermic reactions — practice question

An energy level diagram for the reaction of sodium hydrogen carbonate with dilute hydrochloric acid is shown. Which row gives the correct description of the reaction type and the energy of the reactants and products?

  • Aendothermic; the products have more energy than the reactants
  • Bendothermic; the reactants have more energy than the products
  • Cexothermic; the products have more energy than the reactants
  • Dexothermic; the reactants have more energy than the products

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