Determine the molality of an aqueous solution prepared by dissolving 0.224 moles of LiBr in 27.4...

Question

Question

Determine the molality of an aqueous solution prepared by dissolving 0.224 moles of LiBr in 27.4 moles of H2O.

Answer 1

Answer #1

Molaloty = number of moles of solute/ kg of solvent

molality of aqueous solution of LiBr= moles of LiBr/ kg of water

moles of LiBr= 0.224 moles, Moles of water= 27.4, mass of water= Moles* Molecular weight= 27.4*18=493.2 gms

=0.4932 Kgs

Molality= 0.224/0.4932 =0.4642

Answer 2

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