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Honors Chemistry


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Practice Problems

Example 1
The sodium chloride lattice enthalpy is ΔH for NaCl
→→ Na+ + Cl is 700 kJ/mol. To make 1M NaCl the solution heat is +5.0kJ/mol. Determine the heat of hydration of Na+ and Cl-, where the heat of hydration of Cl- is -300kJ/mol.
Solution:
Given data
Lattice energy = 700 kJ/mol
Heat of solution = 5.0kJ/mol
Heat of hydration of Cl
= -300kJ/mol

Here is a link to a
"chemlibre" page on enthalpy of solution with a problem or two.

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