If the value of ∆H for a reaction is negative, it means that the reaction is

Assessment: WAEC SSCE - Chemistry - 1997 (Objective) Subject: Chemistry

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If the value of ∆H for a reaction is negative, it means that the reaction is
Answer Details
If the value of ∆H for a reaction is negative, it means that the reaction is exothermic. An exothermic reaction releases heat to the surroundings. ∆H is the change in enthalpy during a reaction, and when ∆H is negative, it means that the products have lower enthalpy than the reactants. This implies that energy is released during the reaction, which results in the increase in temperature of the surroundings. Exothermic reactions are spontaneous, and they occur on their own without any external energy input.
Read lesson note on Kinetic Theory Of Matter And Gas Laws (JAMB)
Read lesson note on Energy Changes (JAMB)
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