Question

0.5g of salt is dissolved in 25g of water . Calculate the percentage amount of salt in that solution

Answer 1

Given ;
Mass of solute (Salt) = 0.5g
Mass of solvent (Water) = 25g
Total mass of solution= 25g + 0.5g = 25.5g

$$\begin{gathered} \mathrm{Percentage}\mathrm{of}\mathrm{solute}=\frac{\mathrm{Mass}\mathrm{of}\mathrm{Solute}}{\mathrm{Total}\mathrm{mass}\mathrm{of}\mathrm{solution}}\times 100 \\ =\frac{0.5\mathrm{g}}{25.5\mathrm{g}}\times 100 \\ =1.96\% \end{gathered}$$

Thus 1.96% of salt is present in solution.