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WorksheetsU7 Solutions Pt 1
Total questions: 14
Worksheet time: 42mins
A substance is classified as an electrolyte because
it contains covalent bonds
its aqueous solution has a pH value of 7
it has a high melting point
its aqueous solution conducts an electric
current
Based on Reference Table F, which of these
saturated solutions has the lowest concentration of
dissolved ions?
AgCl(aq)
NaCl(aq)
NiCl2(aq)
MgCl2(aq)
The attraction between water molecules and an Na+ ion or a Cl– ion occurs because water molecules
are
symmetrical
polar
nonpolar
linear
At standard pressure, which substance becomes
less soluble in water as temperature increases from
10.°C to 80.°C?
HCl
KCl
NaCl
NH4Cl
Which compound is insoluble in water?
Na3PO4
NH4Cl
KOH
PbSO4
Which compound is least soluble in water at
60. °C?
NaCl
KClO3
KNO3
NH4Cl
According to your Reference Tables, which
substance forms an unsaturated solution when 80
grams of the substance is dissolved in 100 grams
of H2O at 10°C?
KI
KNO3
NaNO3
NaCl
An unsaturated aqueous solution of NH3 is at 90°C
in 100. grams of water. According to Reference
Table G, how many grams of NH3 could this
unsaturated solution contain?
20. g
15 g
5 g
10. g
According to Reference Table G, how many grams
of KNO3 would be needed to saturate 200 grams of
water at 70ºC?
43 g
86 g
134 g
268 g
According to Reference Table G, a temperature
change from 10°C to 30°C would have the least
effect on the solubility of
SO2
NH3
KClO3
NaCl
Base your answer to the following question on
Given the diagram below that shows carbon
dioxide in an equilibrium system at a temperature
of 298 K and a pressure of 1 atm:
Which changes must increase the solubility of the
carbon dioxide?
decrease pressure and increase temperature
increase pressure and increase temperature
decrease pressure and decrease temperature
increase pressure and decrease
temperature
The solubility of KCl(s) in water depends on the
pressure on the solution
rate of stirring
temperature of the water
size of the KCl sample
When PbI2(s) is added to Na2CO3(aq), a white
precipitate is formed. According to Reference
Table F, the white precipitate most likely is
KNO3
Na2CO3
PbCO3
NaI
A solute is added to water and a portion of the
solute remains undissolved. When equilibrium
between the dissolved and undissolved solute is
reached, the solution must be
dilute
unsaturated
supersaturated
saturated
