Question

how many milliliter of concentrated nitric acid are required to prepare 500mL of .5 M HNO3

Answer 1

The question is incomplete, here is the complete question:

How many milliliter of concentrated nitric acid, 16 M are required to prepare 500 mL of 0.5 M $HNO_3$

Answer: The volume of concentrated nitric acid solution required is 15.625 mL

Explanation:

To calculate the molarity of the diluted solution, we use the equation:

$M_1V_1=M_2V_2$

where,

$M_1\text{ and }V_1$ are the molarity and volume of the concentrated nitric acid solution

$M_2\text{ and }V_2$ are the molarity and volume of diluted nitric acid solution

We are given:

$M_1=16M\\V_1=?mL\\M_2=0.5M\\V_2=500mL$

Putting values in above equation, we get:

$16\times V_1=0.5\times 500\\\\V_1=\frac{0.5\times 500}{16}=15.625mL$

Hence, the volume of concentrated nitric acid solution required is 15.625 mL