Question

Find the weight of solvent in 24% (w/v) of the solution, if the density of the solution is 1.06 g ml${}^{-1}$.

• A. 82 g
  
• B. 80 g
  
• C. 72 g
  
• D. 60 g
  

Answer 1

The correct option is A 82 g

24% w/v means $24g$ solute present in $100$ ml solution.

density = $\frac{m}{v}$

$1.06=\frac{mass}{100}$

mass $=106g$

solution = solute + solvent

$106=24+$ solvent

solvent $=82g$