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Problem: The lattice energy* of NaI is -686 kJ/mol, and the enthalpy of hydration is -694 kJ/mol. Calculate the enthalpy of solution per mole of solid NaI. Describe the process to which this enthalpy change applies.*Lattice energy was defined in Chapter 3 as the energy change for the process M+(g) + X-(g) → MX(s).

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H°solution = H°lattice + H°hydration


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Problem Details

The lattice energy* of NaI is -686 kJ/mol, and the enthalpy of hydration is -694 kJ/mol. Calculate the enthalpy of solution per mole of solid NaI. Describe the process to which this enthalpy change applies.

*Lattice energy was defined in Chapter 3 as the energy change for the process M+(g) + X-(g) → MX(s).

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Based on our data, we think this problem is relevant for Professor Billman's class at Abilene Christian University.

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Our data indicates that this problem or a close variation was asked in Chemistry: An Atoms First Approach - Zumdahl Atoms 1st 2nd Edition. You can also practice Chemistry: An Atoms First Approach - Zumdahl Atoms 1st 2nd Edition practice problems.