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AIIMS2002ChemistryThermodynamics (C)

The heat of neutralization of a strong base and a strong acid is 57 ~kJ . The heat released when 0.5 mole of HNO ₃ solution is added to 0.20 moles of NaOH solution, is

Options

  1. A11.4 ~kJ
  2. B34.7 ~kJ
  3. C23.5 ~kJ
  4. D58.8 ~kJ .

Correct answer

A. 11.4 ~kJ

Step-by-step solution

Heat of neutralization ( H)=57 ~kJ , mole of HNO ₃=0.5 mole and mole of NaOH =0.2 mole. When HNO ₃ solution is added to NaOH solution, then 0.2 mole of HNO ₃ solution will combine with 0.2 mole of OH ⁻ ions of NaOH solution. Heat released = H 0.2=57 0.2=11.4 ~kJ .

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