A sample of concentrated nitric acid has a density of 1.41 g/mL and contains 70.0% HNO3 by mass.
(a) What mass of HNO3 is present per liter of solution?
(b) What is the molarity of the solution?
Step 1 of 2
Here, we have to calculate the mass of HNO3 is present in the litre solution.
The ratio of the mass of an object to its volume.
Let’s calculate the mass of HNO3 Solution
Volume of solution = 1L
Density = 1.41 g/mL.
Write the equality and conversion factor.
1 g = 1ml
1 L = 103 ml.
So, the conversion factors are and
Mass = Density x volume.
= 1410 g/L.
Let’s calculate the mass of solution per one litre.
If the solution is 100g, the given Mass % of HNO3 is 70.0%.
Mass of HNO3 solution =
Total mass of solution =100g
Mass of HNO3 = 70g
Mass of solution per litre = 1410 g/L
Mass of HNO3 Solution =
= 987 g/L.
Therefore, mass of HNO3 solution per litre is 987 g/L.