Question

What Molarity Is 85% Phosphoric Acid?

Answer 1

Molarity:

• Molarity can be defined as the number of moles of the solute dissolved in per liter of the solution and it can be represented as $\mathrm{M}=\frac{\mathrm{Number}\mathrm{of}\mathrm{moles}\mathrm{of}\mathrm{the}\mathrm{solute}}{\mathrm{Volume}\mathrm{of}\mathrm{the}\mathrm{solution}(\mathrm{in}\mathrm{l})}$.
• One gram of ${\mathrm{H}}_3{\mathrm{PO}}_4$(Phosphoric acid) is equal to $\frac{1}{98}$ moles.
• Hence, we can say that 1 liter of ${\mathrm{H}}_3{\mathrm{PO}}_4$ contains 14.615 moles of solute.

Therefore, the molarity of 85% of Phosphoric acid solution is 14.615 M.