Question

What is the mass of $KI$ in 14.86 mL of a $32.44g/100mL$ aqueous $KI$ solution?

• A. 6.85 g
• B. 3.85 g
• C. 5.82 g
• D. 4.82 g

Answer 1

The correct option is D 4.82 g

Given:
Volume of the solution = 14.86 mL
$\text{Consider the mass of the solute to be x g.}$
Since, 100 mL of the solution contains 32.44 g of $KI$,
14.86 mL of solution will contain,
$=\frac{32.44}{100}gm{L}^{-1}\times 14.86mL=4.82g$
14.86 mL $KI$ solution contains 4.82 g of $KI$.