Q3-SUMMATIVE TEST IN GEN. CHEMISTRY 2
Quiz by Hazel Castro
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- Q1
The principal source of difference in the normal boiling points of ICI (97 oC; mol. mass 162 amu) and Br2 (59 oC; mol. mass 160 amu) is:
Both hydrogen bonding and dipole-dipole interactions
London-dispersion forces
dipole-dipole interactions
hydrogen bonding
60s - Q2
Of the following substances, only _______has London-dispersion forces as the only intermolecular force.
CH3OH
HCl
H2S
NH3
60s - Q3
Of the following diatomic molecules, which has the highest boiling point?
Br2
Cl2
O2
N2
60s - Q4
Which statements about viscosity is true?
(i) Viscosity increases as temperature decreases.
(ii) Viscosity increases as molecular weight increases.
(iii) Viscosity increases as intermolecular force increase.
(i), (ii), and (iii)
(i) only
(ii) and (iii)
(i) and (iii)
60s - Q5
Which of the following diatomic molecules has the highest heat of vaporization?
I2
Br2
F2
Cl2
60s - Q6
In general, the vapor pressure of a substance increases as _________ increases.
viscosity
molecular weight
temperature
surface tension
60s - Q7
Which group of substances is arranged in order from the highest to the lowest melting point?
HF>NaF>H2
NaF>H2>HF
HF>H2>NaF
NaF>HF>H2
60s - Q8
When the electron cloud of a molecule is easily distorted, the molecule has a high ________________.
van der Waals radius
polarizability
dipole moment
polarity
60s - Q9
When liquid bromine is cooled to form a solid, which of the following types of solid would it form?
covalent network
ionic
metallic
molecular
60s - Q10
The stronger the intermolecular forces in a substance...
the smaller the deviation from ideal gas behavior.
the higher the boiling point.
the lower the boiling point.
the higher the vapor pressure.
60s - Q11
Where is the point on the phase diagram where the substance exists as solid, liquid, and gas?
Triple Point
Critical Pressure
Critical Point
Supercritical Fluid
60s - Q12
On a phase diagram, the temperature and pressure at which the phase boundary between the liquid and gas ceases to exist. What is it called?
Triple Point
Pressure
Supercritical Fluid
Critical Point
60s - Q13
What is the phase of the substance that goes beyond the critical point?
Super solid
Supercritical fluid
Super liquid
Super gas
60s - Q14
During these phase changes, which did NOT release energy?
Condensation
Freezing
Sublimation
Deposition
60s - Q15
Which of the following is an example of sublimation?
Melting of an ice cube
Frost forming on the ground
Dry Ice
Droplets on your can of soda
60s