Per NCERT, the formula for MASS BY MASS percentage (% m/m) is which expression?
A(Mass of solute / Volume of solvent) × 100
B(Mass of solute / Mass of solution) × 100
C(Mass of solvent / Mass of solute) × 100
D(Volume of solution / Mass of solute) × 100
Answer & Solution
Correct answer: B. (Mass of solute / Mass of solution) × 100
% m/m = (mass of solute / mass of solution) × 100, where mass of solution = mass of solute + mass of solvent (per NCERT formula 5.1).
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