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Given that the data for neutralization of a weak acid (HA) and strong acid with a strong base is :HA + OH- → A- + H2O; ΔH =  - 41.80kJH+ + OH- →  H2O; ΔH = - 55.90kJThe enthalpy of dissociation of weak acid would be

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answer is 4.

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Detailed Solution

ΔHn = ΔdH + (-55.9 KJ)ΔdH = -41.8+55.9       = 14.1 KJWhere ΔdH = Enthalpy of dissociation (or) Ionization of weak electrolyte
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Given that the data for neutralization of a weak acid (HA) and strong acid with a strong base is :HA + OH- → A- + H2O; ΔH =  - 41.80kJH+ + OH- →  H2O; ΔH = - 55.90kJThe enthalpy of dissociation of weak acid would be