Solution Concentration Terms

Question 1

molarity (M)

Answer 1

moles of solute/L of solution

Question 2

molality (m)

Answer 2

moles of solute/kg of solvent

Question 3

mole fraction (χ)

Answer 3

moles of solute/total moles

Question 4

mole percent (mol %)

Answer 4

mole fraction * 100

Question 5

parts by mass

Answer 5

(mass solute/mass solution) * multiplication factor

Question 6

percent by mass (%)

Answer 6

multiplication factor = 100

Question 7

parts per million by mass (ppm)

Answer 7

multiplication factor = 10^6

Question 8

parts per billion by mass (ppb)

Answer 8

multiplication factor = 10^9

Question 9

parts by volume (%, ppm, ppb)

Answer 9

(volume solute/volume solution) * multiplication factor