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5. Thermodynamics and thermochemistry — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry5. Thermodynamics and thermochemistry1 Mark
MCQ
The heat of neutralisation of a strong acid and a strong alkali is $57.0\,kJ\,mo{l^{ - 1}}$. The heat released when $0.5\,mole$ of $HN{O_3}$ solution is mixed with $0.2\,mole$ of $KOH$ is......$kJ$
  • A
    $57$
  • ✓
    $11.4$
  • C
    $28.5$
  • D
    $34.9$
✓

Answer

Correct option: B.
$11.4$
(b) $0.2$  mole will neutralize $0.2$  mole of $HN{O_3}$, heat evolved $ = 57 \times 0.2 = 11.4\,kJ.$

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