- Suppose that Salt A had been potassium hydroxide and Salt B had been magnesium sulfate. The results of the experiment would have
supported the explanation(s) provided by which student(s)?
A. Student 2 only
B. Student 3 only
C. Students 1 and 3 only
D. Students 2 and 3 only
- Suppose that the students also tested ammonium nitrate in the experiment and found it to have resulted in a boiling temperature in
solution of 107°C. Student 2 would claim that ammonium nitrate:
F. has a greater molar mass than Salt A, but a smaller molar mass than Salt B.
G. has a greater molar mass than Salt B, but a smaller molar mass than Salt A.
H. has a greater enthalpy change of dissolution than Salt A, but a smaller enthalpy change of dissolution than Salt B.
J. has a greater enthalpy change of dissolution than Salt B, but a smaller enthalpy change of dissolution than Salt A.
- Which of the following graphs of the relative number of particles produced is most consistent with Student 2’s explanation?
