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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is enthalpy?
💡 Hint: Think about the relationship between heat and chemical reactions.
Question 2
Easy
What does a negative change in enthalpy (∆H < 0) indicate?
💡 Hint: Recall the definition of exothermic 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 does the change in enthalpy (∆H) signify in a reaction?
- Amount of energy lost
- Change in heat content
- Rate of reaction
💡 Hint: Focus on what ∆H measures regarding energy.
Question 2
In an exothermic reaction, what can you expect about the temperature of the surroundings?
- True
- False
💡 Hint: Recall the effects of heat release during reactions.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A chemical process releases 200 kJ of energy. Is this process endothermic or exothermic? Calculate ∆H.
💡 Hint: Consider what it means to release energy during a reaction.
Question 2
Calculate the enthalpy change if the reactants have an enthalpy of 150 kJ and the products have an enthalpy of 50 kJ.
💡 Hint: Use the fundamental enthalpy calculation formula.
Challenge and get performance evaluation