Final exam -CHEM 111 Questions and
All Correct Answers 2025-2026
Updated.
What happens to delta H when you reverse the equation? - Answer The sign
changes but not the magnitude of delta H
What must happen in an equation when multiplying by factor (n)? - Answer Must
multiple delta H by the same factor
What is the enthalpy equation? - Answer H=U+PV
What is the system? - Answer Reactants and products (the reaction)
What does delta H =? - Answer q (heat)
What does q= - Answer s m delta T
What is m? - Answer Mass
What is s? - Answer Specific heat
What is delta T? - Answer The change in temperature (T final- T initial)
What is C? - Answer The heat capacity of an object
How do we calculate the heat associated with a temperature change? - Answer
q=sm delta T
What does Calorimetry mean? - Answer The measurement of heat changes
What is the specific heat defined as? - Answer The amount of heat required to raise
the temperature of 1g of the substance by 1C
What is heat capacity defined as? - Answer The amount of heat required to raise the
temperature of an object by 1C
What are specific heat units? - Answer J/(g*C)
What are heat capacity units? - Answer J/C
How do we measure qsys= -q surr? - Answer By measuring the temperature change
for the surroundings
What will delta H depend on? - Answer The amount of matter involved
What happens in an exothermic reaction in relation to the system and surroundings? -
Answer The system loses heat, and the surroundings gain heat
What does Hess's law state? - Answer The change in enthalpy for a stepwise
process is the sum of the enthalpy changed for each of the steps
All Correct Answers 2025-2026
Updated.
What happens to delta H when you reverse the equation? - Answer The sign
changes but not the magnitude of delta H
What must happen in an equation when multiplying by factor (n)? - Answer Must
multiple delta H by the same factor
What is the enthalpy equation? - Answer H=U+PV
What is the system? - Answer Reactants and products (the reaction)
What does delta H =? - Answer q (heat)
What does q= - Answer s m delta T
What is m? - Answer Mass
What is s? - Answer Specific heat
What is delta T? - Answer The change in temperature (T final- T initial)
What is C? - Answer The heat capacity of an object
How do we calculate the heat associated with a temperature change? - Answer
q=sm delta T
What does Calorimetry mean? - Answer The measurement of heat changes
What is the specific heat defined as? - Answer The amount of heat required to raise
the temperature of 1g of the substance by 1C
What is heat capacity defined as? - Answer The amount of heat required to raise the
temperature of an object by 1C
What are specific heat units? - Answer J/(g*C)
What are heat capacity units? - Answer J/C
How do we measure qsys= -q surr? - Answer By measuring the temperature change
for the surroundings
What will delta H depend on? - Answer The amount of matter involved
What happens in an exothermic reaction in relation to the system and surroundings? -
Answer The system loses heat, and the surroundings gain heat
What does Hess's law state? - Answer The change in enthalpy for a stepwise
process is the sum of the enthalpy changed for each of the steps
