Within a phase heat is the product of specific heat sample mass and temperature

# Within a phase heat is the product of specific heat

This preview shows page 48 - 52 out of 52 pages.

Within a phase, heat is the product of specific heat, sample mass, and temperature change. The temperature of the substance does not rise during a phase change. For the phase changes, the product of mass and the heat of fusion of vaporization is heat.
Textbook Problems – Due Friday, January 25 Chapter 11 p. 473, numbers 11.20, 11.21 and 11.24 p. 474, numbers 11.26 and 11.37 p. 475, number 11.50 p. 477, number 11.81 Chapter 12 p. 522, numbers 12.13 and 12.15 p. 524, numbers 12.45 and 12.46
Chapter 10, 11 and 12 Review Problems 1. Hydrogen gas is produced when zinc reacts with sulfuric acid: Zn(s) + H 2 SO 4 (aq) ZnSO 4 (aq) + H 2 (g) If 159 mL of wet H 2 gas is collected over water at 24 o C and a barometric pressure of 738 torr, how many grams of Zn have been consumed? (The vapor pressure of water at 24 o C is 22.4 torr) 2. What are the mole fractions of each component in a mixture of 15.08 g O 2 , 8.17 g N 2 and 2.64 g H 2 ? What is the partial pressure in atm of each component of this mixture if it is held in a 15.50 L vessel at 15 o C?
Chapter 10, 11 and 12 Review Problems 3. Based on the type of intermolecular forces, predict the substance in each pair that has the higher boiling point: a. propane (C 3 H 8 ) or n-butane (C 4 H 10 ) b. sulfur dioxide (SO 2 ) or sulfur trioxide (SO 3 ) c. phosgene (Cl 2 CO) or formaldehyde (H 2 CO) d. diethyl ether (CH 3 CH 2 OCH 2 CH 3 ) or 1-butanol (CH 3 CH 2 CH 2 CH 2 OH)
Chapter 10, 11 and 12 Review Problems 4. Two isomers of the planar compound 1,2-dichloroethylene are shown here: (a) Which of the two isomers will have the stronger dipole- dipole forces? (b) One isomer has a boiling point of 60.3 o C and the other 47.5 o C. Which isomer has the higher boiling point?

#### You've reached the end of your free preview.

Want to read all 52 pages?

• Fall '19
• Atom, Intermolecular force, Chemical polarity, Van der Waals force

### 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