The density of an aqueous solution of nitric acid is 1.64 g/ml and the concentration is 1.85 m. what is the concentration of this solution in percent by mass?

Mass % of the solution = 7.1067 %

Explanation:

Given :

Molarity of nitric acid solution = 1.85 M

Density of the solution = 1.64 g/mL

Molarity of a solution is defined as the number of moles of solute present in 1 liter of the solution.

Lets, consider the volume of the solution = 1 L

Thus,

Moles of nitric acid present in the solution:

So,

Moles of Nitric acid  = 1.85 moles

Molar mass of nitric acid = 63 g/mol

The mass of Nitric acid can be find out by using mole formula as:

Thus,  

Mass of Nitric acid = 116.55 g

Also,

Given : Density = 1.64 g/mL

Also, 1 L = 10³ mL

Volume of the solution is 1000 mL

So, mass of the solution:

Mass of the solution  = 1640 g

Mass % is defined as the mass of solute in 100 g of the solution. The formula for the calculation of mass % is shown below:

So,

Mass % = 7.1067 %

the ratio of the conjugate base to the acid required to attain the desired ph.