Heat of neutralisation of HCl and NaOH is - 57.46 kJ/Kg mole. The heat of ionisation of water will be _____________ kJ/Kg mole?
Correct answer: A. 57.46
- A. 57.46
- B. -57.46
- C. 114.92
- D. -28.73
Explanation
Neutralisation of H+ and OH− releases 57.46 kJ per kg-mole of water formed. Ionisation of water is the reverse process, so it requires +57.46 kJ/kg-mole, giving option a.
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