WorksheetsExam 1 Review (11 + 13)
Total questions: 12
Worksheet time: 3hrs 0mins
Name
Class
Date
1.
In liquid methanol, CH3OH, which intermolecular forces are present?
a)
Only dipole-dipole and hydrogen bonding
b)
Only dispersion and ion-dipole
c)
Dispersion, dipole-dipole, and hydrogen bonding
d)
Only hydrogen bonding
2.
Place the following in order of increasing boiling point.
a)
He<O2<I2
b)
I2<He<O2
c)
He<I2<O2
d)
O2<I2<He
3.
Choose the substance with the highest vapor pressure at a given temperature.
a)
CH3OCH2CH3
b)
SbH3
c)
RbBr
d)
BH3
4.
Which of the following molecules would have the highest heat of vaporization?
a)
CF4
b)
CH3OH
c)
Xe
d)
NCl3
5.
CS2 has a vapor pressure of 363 torr at 25°C and a normal boiling point of 46.3°C. Find ΔHvap.
a)
10 kJ/mol
b)
40 kJ/mol
c)
88 kJ/mol
d)
27 kJ/mol
6.
Ethanol has a ΔHvap of 38.56 kJ/mol and a normal boiling point of 78.4°C. Find the vapor pressure at 17°C.
a)
22 torr
b)
47 torr
c)
80 torr
d)
5.9 torr
7.
What is the freezing point of 6.67% by mass aqueous MgCl2 solution? Kf for water is 1.86 °C/m.
a)
-1.4°C
b)
-4.18°C
c)
-2.9°C
d)
-0.14°C
8.
Use Henry's law to find the solubility of helium at 2.0 atm and 25°C. KH for He is 3.70⋅10−4 M/atm.
a)
9.7×10− 5 M
b)
7.4×10− 4 M
c)
3.4×10− 3 M
d)
6.6×10− 3 M
9.
Which molecule would you expect to be more soluble in water?
a)
CH3Cl
b)
CCl4
10.
A 0.137 M ionic solution has an osmotic pressure of 8.7 atm at 13°C. Determine the van't Hoff factor.
a)
1.6
b)
4.3
c)
2.7
d)
0
11.
What are colligative properties determined by?
a)
Number of dissolved particles and their identity
b)
Only number of dissolved particles
c)
Only identity of dissolved particles
12.
Which of the following will have the highest boiling point?
a)
0.050 m aqueous CaCl2
b)
0.300 m aqueous sucrose
c)
0.100 m aqueous KNO3
d)
0.300 m aqueous NaCl
100 %
