Answer to Question #203281 in Inorganic Chemistry for hibah

Question #203281

A student was asked to make up a 10% w/w solution of sodium carbonate. Calculate the amount of solute and solvent required to prepare that


1
Expert's answer
2021-06-07T03:13:26-0400

Molality= (mass of solute×1000)/(molar mass×mass of solvent)


Now see, 10% Na2CO3 means


100gram solution contains 10gram Na2CO3


Meaning ;


Mass of solute=10 g


Mass of solvent= 100–10=90g


Molar mass of Na2CO3=106g


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