A solution is made by adding 23.1 mL of concentrated nitric acid ( 70.4 wt% , density 1.42 g/mL ) to some water in a volumetric flask, and then adding water to the mark to make exactly 200 mL of solution. Calculate the concentration of this solution in molarity.

The correct solution is "3.6975 M".

Explanation:

The given values are:

Volume of solution,

V = 23.2 mL

Density,

D = 1.42 g/mL

Final volume,

= 200 mL

or,

= 0.2 L

Now,

The mass will be:

=

=

=

Mass of HNO₃ will be:

=

=

Mol of HNO₃ will be:

=

=

=

hence,

The concentration will be:

=

=

=