Problem: A 1.37-M solution of citric acid (H3C6H5O7) in water has a density of 1.10 g/cm3. Calculate the mass percent, molality, mole fraction, and normality of the citric acid. Citric acid has three acidic protons.

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FREE Expert Solution

The molar mass of citric acid is 192.124 g/mol.

The molar mass of water is 18.016 g/mol.

In mass percent:

mass percent=mass solutemass solution×100

mass solute=(1.00 L)(1.37 molL)(192.124 g1 mol)=263.21 g

mass solvent=1 L(1 mL10-3 L)(1 cm31 mL)(1.10gcm3)=1,100 g

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Problem Details

A 1.37-M solution of citric acid (H3C6H5O7) in water has a density of 1.10 g/cm3. Calculate the mass percent, molality, mole fraction, and normality of the citric acid. Citric acid has three acidic protons.