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Enthalpy of solution for BaCI(2). 2H(2)O...

Enthalpy of solution for `BaCI_(2). 2H_(2)O and BaCI_(2)` are `18.8 and -30.6 kL mol^(-1)` respectively. Calculate the enthalpy of hydration of `BaCI_(2)` to `BaCI_(2). 2H_(2)O`.

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To calculate the enthalpy of hydration of BaCl₂ to BaCl₂·2H₂O, we can use Hess's law, which states that the total enthalpy change for a reaction is the sum of the enthalpy changes for the individual steps of the reaction. ### Step-by-step Solution: 1. **Identify the Given Data:** - Enthalpy of solution for BaCl₂·2H₂O (ΔH₁) = +18.8 kJ/mol - Enthalpy of solution for BaCl₂ (ΔH₂) = -30.6 kJ/mol ...
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