$292$ Stoichiometry and Process Calculations

$9\mathrm{.}73$ A mixture containing $30\%$ acetone and $70\%$ chloroform is extracted with a mixy solvent containing acetic acid and water. The two immiscible phases $-$ the raffinate and extract phases $-$ that result after extraction had the following analysis: Extract: acetone $7\mathrm{.}5\%,$ chloroform $6\mathrm{.}06\%,$ acetic acid $31\mathrm{.}88\%$ and water $54\mathrm{.}56\%$ Raffinate: acetone $20\mathrm{.}0\%,$ chloroform $67\mathrm{.}0\%$ acetic acid $10\mathrm{.}0\%$ and water $3\mathrm{.}0\%$ For the basis of $100kg$ of the mixture extracted, determine the following:

$($a$)$ The composition of the mixed solvent on a weight basis

$($b$)$ The quantities of raffinate and extract phases

$($c$)$ The amount of mixed solvent used