Q7 / 180 · COMEDK 2013 · Chemistry

Heat liberated with $100 \mathrm{~mL}$ of $1 \mathrm{~N} \mathrm{~NaOH}$ is neutralised by $300 \mathrm{~mL}$ of $1 \mathrm{~N} \mathrm{~HCl}$

  • A
    $11.56 \mathrm{~kJ}$
  • Correct answer
    B
    $5.73 \mathrm{~kJ}$
  • C
    $22.92 \mathrm{~kJ}$
  • D
    $17.19 \mathrm{~kJ}$

Solution

Equivalent of $\mathrm{NaOH}$ neutralised by $\mathrm{HCl}$ $=100 \times 1 \times 10^{-3}=0.1 \mathrm{~mol}$ $\therefore$ Heat released $=57.3 \times 0.1=5.73 \mathrm{~kJ}$

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

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