Mole fraction x_A is:
An_A / (n_A + n_B)
BConcentration
Cmass_A / total mass
Dn_A / V
Answer & Solution
Correct answer: A. n_A / (n_A + n_B)
Mole fraction x_A = moles of A / total moles in solution. Dimensionless, sums to 1 over all components.
Related questions
The mass of NaOH (M = 40 g/mol) required to prepare 500 mL of a 0.20 M NaOH solution isWhich of these solutions will boil at the highest temperature at 1 atm?The molality of a 1 M aqueous NaCl solution (density = 1.04 g/mL, NaCl M = 58.5 g/mol) is Osmotic pressure π of a dilute solution obeys π = C R T. Here C representsVan't Hoff factor i > 1 for a solute indicatesA negative deviation from Raoult law is expected whenIf a solute dimerises in solution, its observed molar mass compared with the calculated vaWhich of the following is NOT a colligative property?