# chemistry

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it has been a while since ive done these so i just need a refresher. im looking for the heat of hydration of lithium chloride and sodium chloride.

compound Lattice Energy deltaH soln
LiCl -834 kj/mol -37.0 kj/mol
NaCl -769 kj/mol +3.88 kj/mol

what is delta H hydration?

• chemistry -

dHsolution = dHsolvation - lattice energy
-37 = dHhydration -(-834)

• chemistry -

thats right now i remember! i knew it wasn't hard but its been a while. thanks! so its just -871 for LiCl

• chemistry -

Looks like that.

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