Intermolecular Forces practice

# Intermolecular Forces practice - the placement of the ions...

This preview shows pages 1–2. Sign up to view the full content.

Intermolecular Forces In-Class Sample Problems 1. Calculate the enthalpy change upon converting 1.00mol of ice at -25 o C to water vapor (steam) at 125 o C under a constant pressure of 1 atm. The specific heats of ice, water and steam are 2.09J/gK, 4.18J/gK and 1.84J/gK, respectively. For H 2 O, the enthalpy of fusion is 6.01kJ/mol and the enthalpy of vaporization is 40.67kJ/mol. 2. Determine the number of Na + and Cl - ions in the NaCl unit cell (see your diagram for

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: the placement of the ions in the structure. 3. The geometric arrangement of ions in crystals of LiF is the same as that in NaCl. The unit cell of LiF is 4.02Å on an edge. Calculate the density of LiF in g/cm 3 4. Use the vapor pressure diagram in your textbook to determine the normal boiling point of methanol. Explain why the boiling point of methanol is seen to be lower than ethanol. Molecular Interaction Flowchart Crystalline Structures...
View Full Document

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern