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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is spontaneity in chemical reactions?
π‘ Hint: Think about reactions that happen naturally in nature.
Question 2
Easy
How does enthalpy relate to spontaneous reactions?
π‘ Hint: Remember the heat exchange in reactions.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What indicates that a reaction is spontaneous?
- G is positive
- G is negative
- H is negative
π‘ Hint: Remember the significance of the Gibbs equation.
Question 2
True or False: All exothermic reactions are spontaneous.
- True
- False
π‘ Hint: Consider the conditions under which spontaneity can change.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
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.
π‘ Hint: Use the Gibbs equation to find the answer.
Question 2
Explain how temperature affects the spontaneity of a reaction where both ΞH and ΞS are positive.
π‘ Hint: Consider the relation between temperature, enthalpy, and entropy.
Challenge and get performance evaluation