D.
- During the experiment, the temperature reading in the thermometer as readings were taken every 30 sec:
F. increased only.
G. decreased only.
H. increased, then decreased.
J. decreased, then increased.
- Based on Student 3’s explanation, which of the salts in Table 1 would result in the greatest solution boiling temperature?
A. Calcium chloride
B. Ammonium nitrate
C. Potassium hydroxide
D. Magnesium sulfate
- Consider the data for cesium hydroxide shown in the table below:
Which student(s), if any, would predict that cesium hydroxide would produce a solution with a lower boiling temperature than calcium
chloride?
F. Student 1 only
G. Students 2 and 3 only
H. Students 1, 2, and 3
J. None of the students
- Is the claim “If equal amounts of salt are dissolved, sodium chloride will result in a greater boiling point than ammonium nitrate”
consistent with Student 2’s explanation?
A. No, because sodium chloride has a smaller molar mass than ammonium nitrate.
B. No, because sodium chloride has a more negative enthalpy change of dissolution.
C. Yes, because sodium chloride has a smaller molar mass than ammonium nitrate.
D. Yes, because sodium chloride has a more negative enthalpy change of dissolution.
