Question

$15g$ of methyl alcohol is present in $100$ ml of solution. If density of solution is $0.90$ g/ml. Calculate the mass percentage of methyl alcohol in solution.

• A. $16.67\%$
• B. $16.97\%$
• C. $17.67\%$
• D. $17.97\%$

Answer 1

Answer: (A)

$16.67\%$

Mass of the solution present in $100$ ml of solution corresponds to $100\times 0.90=90$ g.

The mass percentage of the solution is $\frac{\text{mass of methyl alcohol}}{\text{mass of solution}}\times 100=\frac{15}{90}\times 100=16.67\%$.

Hence, option A is correct.