Question

Which among the following formulae can be used for calculating the concentration?

(i)$\frac{\text{mass of solute}}{\text{mass of solution}}\times 100$

(ii) $\frac{\text{mass of solute}}{\text{mass of solute + solvent}}\times 100$

(iii)$\frac{\text{mass of solvent}}{\text{mass of solution}}\times 100$

(iv) $\frac{\text{mass of solvent}}{\text{mass of solute + solvent}}\times 100$

(v) $\frac{\text{mass of solute}}{\text{volume of solution}}\times 100$

(vi) $\frac{\text{mass of solvent}}{\text{volume of solution}}\times 100$

• A. (i), (ii), (vi)
• B. (iv), (iii), (vi)
• C. (iv), (iii), (v)
• D. (i), (ii), (v)

Answer 1

The correct option is D

(i), (ii), (v)

The formulae for calculating concentration are:

(i) $\frac{\text{mass of solute}}{\text{mass of solution}}\times 100$

(ii) $\frac{\text{mass of solute}}{\text{mass of solute + solvent}}\times 100$

(v) $\frac{\text{mass of solute}}{\text{volume of solution}}\times 100$