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Questions and Answers
Which of the following expressions can be used to calculate the concentration of a solution in parts per million (ppm)?
Which of the following expressions can be used to calculate the concentration of a solution in parts per million (ppm)?
- (mass solute/mass solution) x 10^9
- (mass solute/mass solution) x 10^3
- (mass solute/mass solution) x 10^6 (correct)
- (mass solute/mass solution) x 10^12
Which of the following expressions can be used to calculate the concentration of a solution in mole fraction?
Which of the following expressions can be used to calculate the concentration of a solution in mole fraction?
- mol solute/mol solvent
- mol solute/(mol solvent - mol solute)
- mol solute/(mol solute + mol solvent) (correct)
- mol solvent/(mol solute + mol solvent)
Which of the following expressions represents the key relationship for calculations involving dilution of concentrated solutions?
Which of the following expressions represents the key relationship for calculations involving dilution of concentrated solutions?
- M1V1 = M2V2 (correct)
- M1V2 = M2V1
- M1/M2 = V2/V1
- M1V1 + M2V2 = M3V3
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