chemical engineering exam questions with all correct answers latest up-
date!!!
1. The heat of reaction remains the same False
even if stoichiometric coefficients are
changed (True/False)
2. Why do heats of reaction change if dif- The heat of reaction must account for the phase
ferent phases are given for products change
or reactants?
3. What conditions are used for the stan- 25 Celsius and 1 atm
dard heat of reaction?
4. What is the main problem with using a They can be hard to isolate the reactions of interest
calorimeter to determine heat of reac-
tion?
5. The standard heat of formation for the False
oxygen atom is zero. (T/F)
6. Which of the following are assump- All carbons form CO2
tions made when determining and us- All sulfur forms SO2
ing heat of combustion? All hydrogens form H2O
All nitrogen's form N2
7. What are the two methods discussed Heat of reaction method and heat of formation
for choosing enthalpy reference states method
and calculating specific enthalpies
8. In the heat of formation method, what The state of the elemental species constituting the
reference states are most convenient products and reactants at STP
to choose when there are reacting
species
9. Inlet-outlet enthalpy only
1/2
date!!!
1. The heat of reaction remains the same False
even if stoichiometric coefficients are
changed (True/False)
2. Why do heats of reaction change if dif- The heat of reaction must account for the phase
ferent phases are given for products change
or reactants?
3. What conditions are used for the stan- 25 Celsius and 1 atm
dard heat of reaction?
4. What is the main problem with using a They can be hard to isolate the reactions of interest
calorimeter to determine heat of reac-
tion?
5. The standard heat of formation for the False
oxygen atom is zero. (T/F)
6. Which of the following are assump- All carbons form CO2
tions made when determining and us- All sulfur forms SO2
ing heat of combustion? All hydrogens form H2O
All nitrogen's form N2
7. What are the two methods discussed Heat of reaction method and heat of formation
for choosing enthalpy reference states method
and calculating specific enthalpies
8. In the heat of formation method, what The state of the elemental species constituting the
reference states are most convenient products and reactants at STP
to choose when there are reacting
species
9. Inlet-outlet enthalpy only
1/2
