Andhra Pradesh Board Solutions for Chapter: Solutions, Exercise 1: Intext Questions

Calculate the mass percentage of benzene $\left({\mathrm{C}}_6{\mathrm{H}}_6\right)$ and carbon tetrachloride $\left({\mathrm{C}\mathrm{C}\mathrm{l}}_4\right)$, if $22 \mathrm{g}$ of benzene is dissolved in $122 \mathrm{g}$ of carbon tetrachloride.

Calculate the mole fraction of benzene in solution containing $30\mathrm{\%}$ by mass in carbon tetrachloride.

Calculate the molarity of the solution:
$30 \mathrm{g}$ of $\mathrm{C}\mathrm{o}{\left({\mathrm{N}\mathrm{O}}_3\right)}_2.\mathrm{}6{\mathrm{H}}_2\mathrm{O}\mathrm{}$ in  $4.3 \mathrm{L}$ of solution.

Calculate the molarity of the solution:

$30 \mathrm{ml}$ of $0.5 \mathrm{M} {\mathrm{H}}_2{\mathrm{SO}}_4$ diluted to$500 \mathrm{ml}$.

Calculate the mass of urea $\left({\mathrm{N}\mathrm{H}}_2{\mathrm{C}\mathrm{O}\mathrm{N}\mathrm{H}}_2\right)$ required in making $2.5 \mathrm{k}\mathrm{g}$ of  $0.25$ molal aqueous solution.

Calculate molality of $\mathrm{KI}$, if the density of $20\mathrm{\%}$ (mass/mass) aqueous $\mathrm{KI}$ is $1.202 \mathrm{g} \mathrm{m}{\mathrm{L}}^{-1}.$

Calculate molarity of $\mathrm{KI}$ if the density of $20\%$ (mass/mass) aqueous $\mathrm{KI}$ is $1.202 \mathrm{g} {\mathrm{mL}}^{-1}$.

Calculate mole fraction of $\mathrm{KI}$ if the density of $20\%$ (mass/mass) aqueous $\mathrm{KI} \mathrm{is} 1.202 \mathrm{g} {\mathrm{ml}}^{-1}$.