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In dilute solution the heat of the reaction NaOH + HCl = NaCl + H2O...

Chemistry
JAMB 1984
In dilute solution the heat of the reaction NaOH + HCl = NaCl + H2O is - 57.3kJ. Therefore the heat of the reaction 2NaOH + H2SO4 \(\to\) Na2SO4 + 2H2O is
  • A. + 28.65 kJ
  • B. - 28.65KJ
  • C. + 57.3KJ
  • D. - 114.6 KJ
  • E. - 229.2 KJ
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Correct Answer: Option D
Explanation
NaOH + HCl = NaCl + H2O \(\Delta\)H = -57.3kJ

Heat of reaction of 2NaOH + H2O4

NaSO4 + H2O is

= 57.3 x 2 = -114.6 kJ
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