.//.//.,…//////////./././././.;;;../.;.//;./.;./;.;.;/
UNE General Chemistry II Exam Review
2026/2027 | Complete Midterm Study
Guide | Practice Questions, Answer
Explanations & Undergraduate Chemistry
Prep
Identify the compound with the highest dipole moment.
CH3OCH3
CH3CHO
CH3CN
CH3CH2CH3
(CH3)2O
CH3CN
1
,.//.//.,…//////////./././././.;;;../.;.//;./.;./;.;.;/
Explain why ice floats in water.
Ice is more dense than water.
Ice is less dense than water.
Steam is less dense than water.
Ice is the same density as water.
Steam is more dense than water.
Ice is less dense than water.
Which one of the following has a definite shape and volume?
liquid
none of the above
all of the above
solid
gas
solid
2
,.//.//.,…//////////./././././.;;;../.;.//;./.;./;.;.;/
The two strands in DNA are held together by
ion-dipole forces.
dipole-dipole forces.
dispersion forces.
ionic bonding.
hydrogen bonding.
hydrogen bonding.
In a liquid, the energy required to increase the surface of the area by a unit amount is called
surface tension.
viscosity.
hydrogen bonding.
dipole-dipole force.
capillary action.
surface tension.
The enthalpy change for converting 1.00 mol of ice at -25.0°C to water at 60.0°C is
__________kJ. The specific heats of ice, water, and steam are 2.09 J/gK, 4.18 J/gK and 1.84
J/gK respectively. For H2O, ^Hfus= 6.01 kJ/mol, and ^Hvap= 40.67 kJ/mol.
11.46
6.31
5461
12.28
3
, .//.//.,…//////////./././././.;;;../.;.//;./.;./;.;.;/
9.58
11.46
Ethanol (C2H5OH) melts at -114°C. The enthalpy of fusion is 5.02 kJ/mol. The specific heats of
solid and liquid ethanol are 0.97 J/gK and 2.3 J/gK, respectively. How much heat (kJ) is needed
to convert 25.0 g of solid ethanol at -125°C to liquid ethanol at -80°C?
7.24 kJ
-14.2 kJ
207.3 kJ
4.95 kJ
2224 kJ
4.95 kJ
Calculate the total quantity of heat required to convert 25.0 g of liquid CCl4(l) from 45.0°C to
gaseous CCl4 at 76.8°C (the normal boiling point for CCl4). The specific heat of CCl4(l) is
0.857 J/(g*°C) its heat of fusion is 3.27 kJ/mol, and its heat of vaporization is 29.82 kJ/mol.
1.21 kJ
6.06 kJ
5.53 kJ
0.681 kJ
5.53 kJ
4
UNE General Chemistry II Exam Review
2026/2027 | Complete Midterm Study
Guide | Practice Questions, Answer
Explanations & Undergraduate Chemistry
Prep
Identify the compound with the highest dipole moment.
CH3OCH3
CH3CHO
CH3CN
CH3CH2CH3
(CH3)2O
CH3CN
1
,.//.//.,…//////////./././././.;;;../.;.//;./.;./;.;.;/
Explain why ice floats in water.
Ice is more dense than water.
Ice is less dense than water.
Steam is less dense than water.
Ice is the same density as water.
Steam is more dense than water.
Ice is less dense than water.
Which one of the following has a definite shape and volume?
liquid
none of the above
all of the above
solid
gas
solid
2
,.//.//.,…//////////./././././.;;;../.;.//;./.;./;.;.;/
The two strands in DNA are held together by
ion-dipole forces.
dipole-dipole forces.
dispersion forces.
ionic bonding.
hydrogen bonding.
hydrogen bonding.
In a liquid, the energy required to increase the surface of the area by a unit amount is called
surface tension.
viscosity.
hydrogen bonding.
dipole-dipole force.
capillary action.
surface tension.
The enthalpy change for converting 1.00 mol of ice at -25.0°C to water at 60.0°C is
__________kJ. The specific heats of ice, water, and steam are 2.09 J/gK, 4.18 J/gK and 1.84
J/gK respectively. For H2O, ^Hfus= 6.01 kJ/mol, and ^Hvap= 40.67 kJ/mol.
11.46
6.31
5461
12.28
3
, .//.//.,…//////////./././././.;;;../.;.//;./.;./;.;.;/
9.58
11.46
Ethanol (C2H5OH) melts at -114°C. The enthalpy of fusion is 5.02 kJ/mol. The specific heats of
solid and liquid ethanol are 0.97 J/gK and 2.3 J/gK, respectively. How much heat (kJ) is needed
to convert 25.0 g of solid ethanol at -125°C to liquid ethanol at -80°C?
7.24 kJ
-14.2 kJ
207.3 kJ
4.95 kJ
2224 kJ
4.95 kJ
Calculate the total quantity of heat required to convert 25.0 g of liquid CCl4(l) from 45.0°C to
gaseous CCl4 at 76.8°C (the normal boiling point for CCl4). The specific heat of CCl4(l) is
0.857 J/(g*°C) its heat of fusion is 3.27 kJ/mol, and its heat of vaporization is 29.82 kJ/mol.
1.21 kJ
6.06 kJ
5.53 kJ
0.681 kJ
5.53 kJ
4
