Question

A solution is prepared by dissolving 25g of sucrose in 300 g of water. What is the % by mass of the solute? *

A. 6.55%

B. 9.09%

C. 7.69%

D. 8.33%

Answer 1

Answer: C.

$\omega(sucrose)=\dfrac{mass\ of\ sucrose}{mass\ of\ solution}=\dfrac{25\ g}{25+300\ g}=0.0769=7.69\%$