Problem: Is the change in enthalpy positive or negative for an exothermic reaction?

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We have to describe whether the change in enthalpy is positive or negative for an exothermic reaction.

An exothermic reaction is the one which proceeds with the evolution of heat.

The energy that is released as heat during a chemical reaction comes from the internal energy of the reactants.

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Is the change in enthalpy positive or negative for an exothermic reaction?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Energy Diagram concept. If you need more Energy Diagram practice, you can also practice Energy Diagram practice problems.