Problem:

Fifty kmol of $35$mole$\%$ aqueous solution of acetone at $25C$ is heated and flashed in a drum at $1$atm pressure when $35\%$ of the liquid is vaporized. Using the enthalpy$-$concentration data, calculate $($a$)$ the amounts and the concentrations of the vapour and liquid products, and $($b$)$ the heat supplied to the feed.

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