Citric acid, h3c6h5o7, occurs in plants. lemons contain 5% to 8% citric acid by mass. the acid is added to beverages and candy. an aqueous solution is 0.688 m citric acid. the density is 1.049 g/ml. what is the molar concentration? .

Explanation:

For this question, we have to assume that we have 1 L of solvent. With the molality equation we can calculate the moles of solute, so:

Then we can calculate the grams of solute using the molar mass :

molar mass of =192.12 g/mol

The density for water is 1 Kg/L, therefore 1 L of water equal to 1 Kg, the total mass of the solution would be:

1000 g + 132.17 g = 1132.17 g

With this value we can calculate the volume of the solution using the density, so:

Finally, we can calculate the molarity diving the moles by the volume, so: