1. Tardigrade
  2. Question
  3. Chemistry
  4. The enthalpy change for the following reaction NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l) is -57 kJ. Predict the value of the enthalpy change in the following reaction. Ba(OH)2 + H2SO4(aq) → BaSO4(s) + 2H2O(l)

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Q. The enthalpy change for the following reaction
$NaOH_{(aq)} + HCl_{(aq)} \to NaCl_{(aq)} + H_2O_{(l)}$ is -57 kJ.
Predict the value of the enthalpy change in the following reaction.
$Ba(OH)_2 + H_2SO_{4(aq)} \to BaSO_{4(s)} + 2H_2O_{(l)}$

AIIMSAIIMS 2000Thermodynamics

Solution:

$Ba\left(OH\right)_{2}+H_{2}SO_{4\left(aq\right)} \rightarrow BaSO_{4\left(s\right)}+2H_{2}O_{\left(l\right)}$
In this reaction, neutralisation of dibasic acid by Ba(OH) 2 base is happening. So neutralisation reactions involving two protons should be about double as that of neutralisation reactions involving one proton.