UNE GEN CHEM 2 MIDTERM EXAM
QUESTIONS AND CORRECT ANSWERS| LATEST
UPDATE
At room temperature and 1 atm, methane (CH4) is a gas and carbon tetrachloride (CCl4) is a
liquid. Which intermolecular force is primarily responsible for the phase difference between
methane and carbon tetrachloride?
dispersion
The highly concentrated partial charge between an H atom and F, O, or N atoms is
hydrogen bond
Which of the following will have the lowest boiling point?
CH3CH3
Which of the following will have the lowest boiling point? C bonding
,CF4
Which of the following represents an endothermic process?
vaporization
Which of the following represents an exothermic process?
condensation
Which of the following is true about solutions?
A solution will not spontaneously separate
In the dissolution of an ionic compound in water, which of the following will always be
endothermic?
The overall process of dissolution
, The solubility of sucrose in water at 20 °C is 6.13 mol/L. If 6.55 mol of sucrose is dissolved in
1.00 L of water at 90 °C and allowed to cool to 20 °C with no formation of solid sucrose, the
resulting solution will be
supersaturated
The solubility of sucrose in water at 20 °C is 6.13 mol/L. If 5.72 mol of sucrose is dissolved in
1.00 L of water at 90 °C and allowed to cool to 20 °C with no formation of solid sucrose, the
resulting solution will be
unsaturated
Which of the following is always true, even if the two solutions contain different solutes? The
nonvolatile solute, temperature, and pressure are the same for all solutions.
A 0.5 M solution has a lower boiling point than a 1.0 M solution
Colloids
are generally cloudy or opaque
will not spontaneously separate
are composed of particles larger than molecules dispersed in a medium
QUESTIONS AND CORRECT ANSWERS| LATEST
UPDATE
At room temperature and 1 atm, methane (CH4) is a gas and carbon tetrachloride (CCl4) is a
liquid. Which intermolecular force is primarily responsible for the phase difference between
methane and carbon tetrachloride?
dispersion
The highly concentrated partial charge between an H atom and F, O, or N atoms is
hydrogen bond
Which of the following will have the lowest boiling point?
CH3CH3
Which of the following will have the lowest boiling point? C bonding
,CF4
Which of the following represents an endothermic process?
vaporization
Which of the following represents an exothermic process?
condensation
Which of the following is true about solutions?
A solution will not spontaneously separate
In the dissolution of an ionic compound in water, which of the following will always be
endothermic?
The overall process of dissolution
, The solubility of sucrose in water at 20 °C is 6.13 mol/L. If 6.55 mol of sucrose is dissolved in
1.00 L of water at 90 °C and allowed to cool to 20 °C with no formation of solid sucrose, the
resulting solution will be
supersaturated
The solubility of sucrose in water at 20 °C is 6.13 mol/L. If 5.72 mol of sucrose is dissolved in
1.00 L of water at 90 °C and allowed to cool to 20 °C with no formation of solid sucrose, the
resulting solution will be
unsaturated
Which of the following is always true, even if the two solutions contain different solutes? The
nonvolatile solute, temperature, and pressure are the same for all solutions.
A 0.5 M solution has a lower boiling point than a 1.0 M solution
Colloids
are generally cloudy or opaque
will not spontaneously separate
are composed of particles larger than molecules dispersed in a medium
