10 Questions
Which of the following is an example of an exothermic process?
Surroundings get hot
Which letter on the PE diagram represents the energy of the activated complex?
C
What is the numerical value of the activation energy on the PE diagram?
100 kJ/mol
What is the specific heat (Cs) of aluminum?
0.45 J/g°C
Determine the final temperature (x) when 175 grams of hot aluminum (100.0°C) is dropped into an insulated cup containing 40.0 mL of ice-cold water (0.0°C).
25.0°C
Which of the following best describes the law of conservation of energy?
The total energy of the universe is constant, and energy is neither created nor destroyed
What is the symbol for the enthalpy of reaction?
∆Hrxn
Which type of reaction has a negative change in enthalpy (∆H)?
Exothermic reaction
What is the stored energy or energy of position known as in chemistry?
Potential energy
Which of the following statements about enthalpy change is true?
Enthalpy change is an extensive property
Test your knowledge of exothermic and endothermic reactions with this quiz. Classify given statements as examples of either exothermic or endothermic processes. Also, answer questions related to potential energy diagrams. Ideal for chemistry students and enthusiasts.
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