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Calculate molality and molarity of 15% h2so4 solution with density of 1.02 gmc3

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student-name Shikhar Chandra asked in Chemistry

Find the molarity and molality of a 15% solution of H2SO4 ( density=1.020 g/cm3 and atomic mass = H=1, O=16, S=32amu)

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student-name Kanika answered this

3435 helpful votes in Chemistry, Class IX

Dear Student,

Molarity can be calculated as:

where %mass = 15 %

d = 1.020 g/cm3

MM = 98 g/mol

Now, Molality can be calculated with the help of Molarity, using the following formula:

where, M= molarity = 1.56 M

d = density = 1.020 g/cm3

MM = Molar mass of solute = 98 g/mol

Hope, its clear now.