Chemistry Practice Problems Lattice Energy Application Practice Problems Solution: (a) Use the following data to calculate the combin...

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Solution: (a) Use the following data to calculate the combined heat of hydration for the ions in sodium acetate (NaC2H3O2): ΔHlattice = 763 kJ/mol ΔHsoln = 17.3 kJ/mol(b) Which ion contributes more to the answer for part (a)? Why?

Problem

(a) Use the following data to calculate the combined heat of hydration for the ions in sodium acetate (NaC2H3O2): ΔHlattice = 763 kJ/mol ΔHsoln = 17.3 kJ/mol

(b) Which ion contributes more to the answer for part (a)? Why?

Solution

To solve this problem, recall the formula that relates the heat of solution, lattice energy and heat of hydration:

Given:

ΔHsolution = 17.3 kJ/mol

ΔHlattice = 763 kJ/mol

(a) Solve for ΔHhydration:

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