Chemistry: 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.

We don t even know what the hypothesis is or the project.Explanation:...

A solution is made by adding 23.1 mL of concentrated - id23113503984, sciencecreation87

ethanhose05

26.06.2021

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:

= $D\times V$

= $1.42\times 23.1$

= $32.802 \ g$

Mass of HNO₃ will be:

= $\frac{32.802}{0.704}$

= $46.59375 \ g$

Mol of HNO₃ will be:

= $\frac{mass}{MW}$

= $\frac{46.59375}{63}$

= $0.7395 \ mol$

hence,

The concentration will be:

= $\frac{mol \ of \ HNO_3}{final \ V}$

= $\frac{0.7395}{0.2}$

= $3.6975 \ M$

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