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If the heat of neutralization of a weak acid HA with a strong base be -42.13 kJ/mol, what is heat of ionization of the weak acid? |
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Answer» :The heat of NEUTRALIZATION of a week acid (HX) and strong BASE (MOH) is -11.2kcal/mol .then the heat of DISSOCIATION of weak acid is 2.5 kcal/mole EXPLANATION: Heat of formation of water is 13.7 kcal Thus, kcal/mole GIVEN that heat of neutralisation of HX by strong base MOH is -11.2 kcal/mole Therefore, kcal/mole Adding both the equations kcal/mole Therefore, the heat of dissociation of weak acid is 2.5 kcal/mole Hope this answer is helpful. |
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