Given, $CH_{3}COOH_{aq} \rightarrow CH_{3}COO^{-}_{aq} + H^{+}_{aq}$ $\Delta H_{rxn}^{o} = 0.004 \, kcal \,…

Given, $CH_{3}COOH_{aq} \rightarrow CH_{3}COO^{-}_{aq} + H^{+}_{aq}$ $\Delta H_{rxn}^{o} = 0.004 \, kcal \, gm^{-1}$ Enthalpy change when $1$ mole of $Ba(OH)_{2}$, a strong base, is completely neutralized by $CH_{3}COOH(aq)$ is ($\Delta H^{\circ}$ of neutralization of strong acid with strong base is $= -13.7 \, kcal \, mol^{-1}$)
  1. 27.46 kcal/mol
  2. 27.46 kcal/mol
  3. 26.92kcal/mol
  4. 13.46 kcal/mol

Solution

ΔH o ionisaton of CH 3 COOH=0.04×60=0.24kcal/mol
Enthalpy change =13.7+0.24×2
=26.92kcal mol 1

Asked in: MHT CET Full Test 3

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