Question

What is the %mass concentration in a 100.0 mL H3PO4 solution that contains 88.20 g of H3PO4? The density of the solution is 1.40 g/mL. What is the concentration of H3PO4 expressed in ppm? What is the molarity of H3PO4 in the solution? What is the molality of the solution (assuming the density of water is 1.000 g/mL)?

Answer 1

Answer:

Hints

concentration=density×%by mass

Molarity= concentration/molar mass

Molality=no of moles/mass of solvent in kg

Mass of solvent is of water given by=density of water×volume of container

Solved

Answer 2

Concentration=density * percentage by mass

Molarity = concentration/molar mass

Molality= number of moles/mass of solvent in kg

Mass of solvent is of water given by = density of water*volume of container

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