Q60 / 180 · KCET 2012 · Chemistry

$100 \mathrm{~mL}$ of $0.1 \mathrm{M}$ acetic acid is completely neutralized using a standard solution of $\mathrm{NaOH}$. The volume of ethane obtained at STP after the complete electrolysis of the resulting solution is

  • A
    $56 \mathrm{~mL}$.
  • B
    $224 \mathrm{~mL}$
  • C
    $560 \mathrm{~mL}$
  • Correct answer
    D
    $112 \mathrm{~mL}$.

Solution

Acetic acid on electrolysis gives ethane as Given moles of acetic acid, $$ \mathrm{CH}_{3} \mathrm{COOH}=\frac{0.1 \times 100}{1000}=0.01 $$ $\because 2 \mathrm{~mol} \mathrm{CH}_{3} \mathrm{COOH}$ gives $\mathrm{C}_{2} \mathrm{H}_{6}=22.4 \mathrm{~L}$ $\therefore 0.01 \mathrm{~mol} \mathrm{CH} \mathrm{CHOH}_{3} \mathrm{COOH}$ give $$ \begin{aligned} \mathrm{C}_{2} \mathrm{H}_{6} &=\frac{22.4 \times 0.01}{2} \\ &=0.112 \mathrm{~L} \\ &=112 \mathrm{~mL} \end{aligned} $$

Hence, the correct answer is option: 'D'.

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