If the yield of chloroform obtainable from acetone and bleaching powder is 75%, then what mass of ac

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If the yield of chloroform obtainable from acetone and bleaching powder is 75%, then what mass of acetone is required for producing 30 g of chloroform?

Accepted Answer

$2CH_{3}COCH_{3} + 6Ca(OCl)Cl\overset{\quad 75\%\quad}{\rightarrow}2CHCl_{3} + \left( CH_{3}COO \right)_{2}Ca + 3CaCl_{2} + 2Ca(OH)_{2}$

2 × 58 g 2 × 119.5 g

∴ For 30 g CHCl₃, mass of CH₃COCH₃ needed = $\frac{2 \times 58}{2 \times 119.5} \times 30 \times \frac{100}{75} = 19.4\text{ g}$

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