# What is the density of concentrated phosphoric acid?

## Density Calculation:

**Given:** 85% phosphoric acid and 15% water

**Formula:** Density = Mass/Volume

## Understanding the Density Calculation Process:

**Composition of Concentrated Phosphoric Acid:** The composition of concentrated phosphoric acid is provided as 85% phosphoric acid and 15% water by mass. This composition indicates the distribution of the components within the solution.

## Calculating Volume of Water:

**Volume of Water Calculation:** The mass of water in the solution is given as 15g, and the density of water is 1g/mL. By applying the formula for density, we determine that the volume of water present in the solution is 15mL.

## Calculating Volume of Phosphoric Acid:

**Volume of Phosphoric Acid Calculation:** The volume of phosphoric acid in the solution is obtained by subtracting the volume of water from the total volume of the solution. This calculation results in a volume of 42.82mL for phosphoric acid.

## Calculating Density of Phosphoric Acid:

**Density Calculation:** The final step involves calculating the density of phosphoric acid by dividing the mass of phosphoric acid by its volume. This calculation reveals a density of 1.98g/mL for phosphoric acid in the concentrated solution.