Unit Test — Unit test Answers
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Which is most likely true about water in chemical systems?
A
Water dissolves nonpolar ionic compounds.B
Water dissociates ionic compounds.C
Water dissociates covalent molecules.D
Water dissolves nonpolar covalent substances.22
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Which best explains why water has a much higher boiling point than would otherwise be predicted?
A
Water forms weak hydrogen bonds.B
Water forms strong hydrogen bonds.C
Water has weak cohesive forces.D
Water has strong adhesive forces.23
Consider the reaction below.Fe(s) + CuSO4(aq) Cu(s) + FeSO4(aq)Which reactant is a substance that is dissolved in solution?
A
FeB
CuC
CuSO4D
FeSO424
Which term refers to the formation of ions as a result of a chemical reaction?
A
dissociationB
electrolyteC
hydrationD
ionization25
Which of these factors will cause a solid solute to dissolve faster?
A
increasing the air temperatureB
increasing the amount of soluteC
increasing the amount of solventD
increasing the surface area of solute26
Which factor influences both solubility and the rate of dissolution?
A
pressureB
temperatureC
particle sizeD
nature of solvent27
The molar mass of KCl is 74.55 g/mol. If 8.45 g KCl are dissolved in 0.750 L of solution, what is the molarity of the solution?Use .
A
0.113 MB
0.151 MC
6.62 MD
11.3 MDid you find these answers helpful?
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