Question

The weight percentage and volume percentage (w/v) of a solution are 22 and 44 respectively. What is the density of the solution?

• A. 0.5 g ml${}^{-1}$
  
• B. 1 g ml${}^{-1}$
  
• C. 2 g ml${}^{-1}$
  
• D. 2.5 g ml${}^{-1}$
  

Answer 1

Answer: (C)

2 g ml${}^{-1}$

$\%W/W=22$

$\%W/V=44$

$\to 22g$ solute present in $100g$ solution.

$\to 44g$ solution present in $100mL$ solution

density = $\frac{\text{mass}}{\text{volume}}$

$=\frac{\%W/V}{\%W/V}$

$=\frac{44}{22}=2gm{l}^{-1}$

Hence, te correct option is $\text{C}$