Answer to Question #171490 in Inorganic Chemistry for Irish Renee

Question #171490

What is the molality of a 10% w/v NaCl solution used in the qualitative determination of tannins in plants? (MW NaCl: 58.5 g/mol)


1
Expert's answer
2021-03-15T09:30:00-0400

Basis: 100mL NaCl solution

Mass of NaCl in 100 mL solution = 10 g

Mass of solvent = 100 - 10 = 90 g

Moles of solute(NaCl) =

Molality =

Molality =

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