5. Which of the following exhibits the most hydrogen bonding?
a.
LiH
b.
CH
4
c.
NH
3
d.
H
2
S
e.
CH
2
F
2
6. Which of the following carbon compounds has the highest melting point?
a.
CF
4
b.
CCl
4
c.
CBr
4
d.
CI
4
e.
CH
4
7. Water has such a high specific heat because
a.
it has such a low molecular weight.
b.
it is rather dense.
c.
the O-H single bond has a high bond energy.
d.
it has many relatively strong hydrogen bonds.
e.
it dissolves both ionic and covalent compounds.
8. The triple point is
a. an end to the liquid-gas line in a phase diagram.
b. the relationship between the boiling point, melting point and vapor pressure of a
substance.
c. the point on a phase diagram where solid, liquid, and gas are in equilibrium.
d. the three pieces of data needed to solve the Clausius-Clapeyron equation.
e. the (P,V,T) coordinate of a point on a phase diagram.
9. The main forces responsible for the structure of DNA are
a. ionic bonds and covalent bonds.
b. covalent bonds and ionic bonds.
c. hydrogen bonds and dipole-dipole interactions.
d. covalent bonds and hydrogen bonds.
e. covalent bonds and dipole-dipole interactions.
10. Which of the following is not likely to exhibit hydrogen bonding?
a. CH
3
CH
2
OH
b. CH
3
NH
2
c. H
2
O
d. NH
2
OH
e. (CH
3
)
3
N