A stock solution of hydrofluoric acid is 15 M and has a density of 0.99 g/mL at 25 °C. What is the mass percent of HF at 25 °C?
We’re being asked to determine the mass percent of HF in a stock solution of 15 M hydrofluoric acid (HF) solution.
Mass or weight percent (% by mass)is the percentage of a given element or compound within a solution. The equation used to calculate for mass percent is shown below: