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8.0575*10^-12kg of glaubers salt are dissolved in water to obtainted 1dm^3 of a solution of density 1077.2kg/m^3.caculate molarity,molality and mole fraction of Na2SO4 in the solution.

8.0575*10^-12kg of glaubers salt are dissolved in water to obtainted 1dm^3 of a solution of density 1077.2kg/m^3.caculate molarity,molality and mole fraction of Na2SO4 in the solution.

Grade:12

1 Answers

SAGAR SINGH - IIT DELHI
879 Points
9 years ago

Molarity, also known as molar concentration, is the number of moles of a substance per liter of solution. Solutions labeled with the molar concentration are denoted with a capital M. A 1.0 M solution contains 1 mole of solute per liter of solution.

Molality is the number of moles of solute per kilogram of solvent. It is important the mass of solvent is used and not the mass of the solution. Solutions labeled with molal concentration are denoted with a lower case m. A 1.0 m solution contains 1 mole of solute per kilogram of solvent.

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