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

  • + 28.65 kJ
  • - 28.65KJ
  • + 57.3KJ
  • - 114.6 KJ checkmark
  • - 229.2 KJ

The correct answer is: 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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