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Solutions REVIEW
Test Description: Solutions and solubility
Instructions: Answer all questions to get your test result.
1) What is the definition of Molarity?
A
The mass of solute is dissolved in the total mass of the solution.
B
The moles of solute in a liter of solution.
C
How much solution is dissolved in a given amount of solute
D
A substance that dissolves in water to give a solution that conducts electric current
2) What does a solubility curve show?
A
How much solute has dissolved at 30C.
B
The concentration of a solution.
C
The maximum amount of a substance that can be dissolved in 100g H20 at a given temperature
D
The amount of H2O needed to dissolve the solute.
3) What is the definition of concentration?
A
How much solute is dissolved in a given amount of solution.
B
A substance that dissolves in water to give a solution that conducts electric current.
C
How much solution is dissolved in a given amount of solute.
D
A substance that dissolves in water to give a solution that does not conduct an electric current.
4) Solubility curves can show us information about what three types of solutions?
A
unconcentrated, concentrated, superconcentrated
B
emulsions, colloidals, solutions
C
unsaturated, saturated, supersaturated.
D
not full, full, really full
5) What are the three main ways of increasing the rate of dissolving?
A
decrease temperature, decrease agitation, and decrease surface area
B
increase temperature, increase agitation, and decrease surface area
C
increase temperature, decrease agitation, and increase surface area
D
increase temperature, increase agitation, and increase surface area
6) Solutions with water as the solvent are called
A
aqueous
B
saturated
C
tincture
D
alloy
7) Which two substances are miscible in all proportions?
A
ethanol (alcohol) and water
B
water and mineral oil
C
water and gasoline
D
sugar and water
8) When solutions of NaOH and Pb(NO3)2 are combined, what precipitate forms?
A
Lead (II) Hydroxide
B
Sodium Nitrate
C
Sodium Hydroxide
D
Lead (II) Nitrate
9) In the following equation: AgNO3(aq) + NaCl(aq) = what is the formula of the precipitate that is formed?
A
AgCl2
B
Na(NO3)2
C
NaNO3
D
AgCl
10) What is the balanced net ionic equation for the formation of PbCl2?
A
Pb(aq) + Cl(aq) = PbCl2(s)
B
Pb+2(aq) + 2Cl-1(aq) = PbCl2(s)
C
Pb(aq) + 2Cl(aq) = PbCl2(s)
D
Pb+2(aq) + Cl-1(aq) = PbCl2(s)
11) In which of the following net ionic equations did a precipitate NOT form?
A
Ni3+ (aq) + 3 NO3¯ (aq) + 3 K+ (aq) + 3 Br¯ (aq) = Ni3+ (aq) + 3 NO3¯ (aq) + 3 K+ (aq) + 3 Br¯ (aq)
B
Fe3+ (aq) + 3 OH¯ (aq) = Fe(OH)3 (s)
C
2Cl−(aq) + 2Ag+(aq) = 2AgCl(s)
D
2 Co3+ (aq) + 3 S2- (aq) = Co2S3 (s)
12) Which of the following shows a net ionic equation?
A
Mg2+ (aq) + 2 NO3¯ (aq) + 2 Na+ (aq) + CO32- (aq) = MgCO3 (s) + 2 Na+ (aq)
B
Mg2+ (aq) + CO32- (aq) = MgCO3 (s) + Mg2+ (aq)
C
Mg(NO3)2 (aq) + Na2CO3 (aq) = MgCO3 (s) + 2 NaNO3 (aq)
D
Mg2+ (aq) + CO32- (aq) = MgCO3 (s)
*select an answer for all questions
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