Answer to Question #265524 in General Chemistry for chichi

Question

A 95.5 grams of sodium sulfate (Na₂SO₄)is dissolved in 1150 grams of distilled H2O. Calculate the molality of the Na₂SO₄ solution.

Molar mass: Na = 23 g/mol ;   S = 32 g/mol ;   O = 16 g/mol

Answer 1

Molar mass of Na2SO4= 142.04 g/mol

95.5/142.04= 0.672

0.672mol/1.15kg= 0.585mol/Kg