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3 cards from this section. Quick, good the night before a test.
What is enthalpy?
Think about the relationship between heat and chemical reactions.
What does a negative change in enthalpy (∆H < 0) indicate?
Recall the definition of exothermic reactions.
What does the change in enthalpy (∆H) signify in a reaction?
Focus on what ∆H measures regarding energy.
In an exothermic reaction, what can you expect about the temperature of the surroundings?
Recall the effects of heat release during reactions.
A chemical process releases 200 kJ of energy. Is this process endothermic or exothermic? Calculate ∆H.
Consider what it means to release energy during a reaction.
Calculate the enthalpy change if the reactants have an enthalpy of 150 kJ and the products have an enthalpy of 50 kJ.
Use the fundamental enthalpy calculation formula.
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