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Calculate DeltaH(f)^(@) for chloride ion...

Calculate `DeltaH_(f)^(@)` for chloride ion from the following data `:`
`(1)/(2)H_(2(g))+(1)/(2)Cl_(2(g))rarr HCl_((g)),DeltaH_(f)^(@)=-92.4kJ`
`HCl_((g))+nH_(2)O rarr H_((aq.))^(+)+Cl_((aq.))^(-),DeltaH^(@)=-74.8kJ`
`DeltaH_(f)^(@) H_((aq.))^(+)=0.0kJ`

Text Solution

AI Generated Solution

To calculate the standard enthalpy of formation (\( \Delta H_f^\circ \)) for the chloride ion (\( Cl^- \)), we will use the provided thermochemical equations and their corresponding enthalpy changes. Here’s a step-by-step breakdown of the solution: ### Step 1: Write down the given reactions and their enthalpy changes. 1. The formation of hydrogen chloride (\( HCl \)): \[ \frac{1}{2} H_2(g) + \frac{1}{2} Cl_2(g) \rightarrow HCl(g), \quad \Delta H = -92.4 \, \text{kJ} \] ...
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