1. GENERAL CHEMISTRY-II (1412)
S.I. # 10
1. The attractive interaction of solvent molecules with a solute is called
_________________.
2. When water surrounds the ions of electrolytes or when water is the solvent it is
called ___________________.
3. The overall enthalpy change of a solution formation may be__________________.
a. positive b. negative c. zero d. both a & b
4. A negative enthalpy change is called ____________________.
A positive enthalpy change is called ____________________.
5. In a solution in equilibrium with undisolved solute, the two processes occur at
equal rates produces a ____________________ ____________________.
6. If less solute is present than needed, the solution is ____________________.
If more solute is present than needed, the solution is ____________________.
7. List the colligative properties:
a. ________________________
b. ________________________
c. ________________________
d. ________________________
8. Give the formula for molality:
9. Define a colloid:

2. 10. Water and glycerol, CH2(OH)CH(OH)CH2OH are miscible in all proportions.
What does this mean? How do the OH groups of the alcohol molecule contribute to
this miscibility?
11.
A) Calculate the mass percent of Na2SO4 in a solution containing 10.6 g of Na2SO4 in
483 g of water.
B) An ore contains 2.86 g of silver per ton of ore. What is the concentration of silver
in ppm?
12. Calculate the molality of each:
a. 8.66 g benzene (C6H6) dissolved in 23.6 g CCl4
b. 4.80 g NaCl dissolved in 0.350 L of water