🤓 Based on our data, we think this question is relevant for Professor Gunasekera's class at UIUC.
Solution: Two aqueous solutions are both at room temperature and are then mixed in a coffee cup calorimeter. The reaction causes the teperature of the resulting solution to fall below room temperature. Which of the following statements is TRUE?
a) The products have a lower potential energy than the reactants.
b) This type of experiment will provide data to calculate ΔE rxn.
c) The reaction is exothermic.
d) Energy is leaving the system during the reaction.
e) None of the above statements is true.
The same reaction in a bomb and coffee-cup calorimeter :
a) will give the same value for ΔH rxn because it is the same reaction.
b) will give the same value for ΔH rxn because both systems are identical.
c) will give the same values because both systems are at a constant pressure.
d) will give slightly different values because the coffee-cup calorimeter will do some PV work.
e) will give slightly different values because the bomb calorimeter will do some PV work.