5.6.1 - Is Decrease in Enthalpy a Criterion for Spontaneity ?
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Practice Questions
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What is spontaneity in chemical reactions?
💡 Hint: Think about reactions that happen naturally in nature.
How does enthalpy relate to spontaneous reactions?
💡 Hint: Remember the heat exchange in reactions.
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Interactive Quizzes
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What indicates that a reaction is spontaneous?
💡 Hint: Remember the significance of the Gibbs equation.
True or False: All exothermic reactions are spontaneous.
💡 Hint: Consider the conditions under which spontaneity can change.
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Challenge Problems
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A chemical reaction has an enthalpy change of +100 kJ and a total entropy change of +300 J/K at 298 K. Determine if the reaction is spontaneous.
💡 Hint: Use the Gibbs equation to find the answer.
Explain how temperature affects the spontaneity of a reaction where both ΔH and ΔS are positive.
💡 Hint: Consider the relation between temperature, enthalpy, and entropy.
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