Respuesta :
Answer: The mass percent of nitric acid in the solution is 70.99 %
Explanation:
We are given:
Molarity of nitric acid = 16 M
This means that 16 moles of nitric acid is present in 1 L or 1000 mL of solution
- To calculate the mass of solution, we use the equation:
[tex]\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}[/tex]
Density of solution = 1.42 g/mL
Volume of solution = 1000 mL
Putting values in above equation, we get:
[tex]1.42g/mL=\frac{\text{Mass of solution}}{1000mL}\\\\\text{Mass of solution}=(1.42g/mL\times 1000mL)=1420g[/tex]
- To calculate the number of moles, we use the equation:
[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}[/tex]
Moles of nitric acid = 16 moles
Molar mass of nitric acid = 63.01 g/mol
Putting values in above equation, we get:
[tex]16mol=\frac{\text{Mass of nitric acid}}{63.01g/mol}\\\\\text{Mass of nitric acid}=(16mol\times 63.01g/mol)=1008.16g[/tex]
To calculate the mass percentage of nitric acid in solution, we use the equation:
[tex]\text{Mass percent of nitric acid}=\frac{\text{Mass of nitric acid}}{\text{Mass of solution}}\times 100[/tex]
Mass of solution = 1420 g
Mass of nitric acid = 1008.16 g
Putting values in above equation, we get:
[tex]\text{Mass percent of nitric acid}=\frac{1008.16g}{1420g}\times 100=70.99\%[/tex]
Hence, the mass percent of nitric acid in the solution is 70.99 %
