Question

Concentrated phosphoric
acid is 90% H3PO4 by mass and the remaining mass is water. The
molarity of H3PO4 in 90% H3PO4 is 12.2 M at roomtemperature.

a. What is the density of this solution at room temperature? 1.33 g/mL

b. What volume (in mL) of this solution is needed to make a 1.00 L solution of a 1.00 M

phosphoric acid? 82.0 mL​

Answer 1

Explanation:

Concentrated phosphoric

acid is 90% H3PO4 by mass and the remaining mass is water. The

molarity of H3PO4 in 90% H3PO4 is 12.2 M at roomtemperature.

a. What is the density of this solution at room temperature? 1.33 g/mL

b. What volume (in mL) of this solution is needed to make a 1.00 L solution of a 1.00 M

phosphoric acid? 82.0 mL