Frequently Asked Question

Questions asked by users might not always be phrased in the clearest way.

What is enthalpy change?

Accepted Answer

Enthalpy change (ΔH) is the amount of heat absorbed or released during a chemical reaction at constant pressure. A positive ΔH indicates an endothermic reaction (heat absorbed), while a negative ΔH indicates an exothermic reaction (heat released).


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