Starting with a 6.847 M stock solution of HNO3, five standard solutions are prepared via serial dilution. At each stage, 25.00 mL of solution are diluted to 100.00 mL. Determine the concentration of and the number of moles of HNO3 in the final (most dilute, Md5) solution.

The concentration of in the final solution is 0.006688 M and number of moles are 0.00006688

Explanation:

According to the neutralization law,

where,

= molarity of stock solution = 6.847 M

= volume of stock  solution = 25.00 ml

= molarity of ist dilute solution = ?

= volume of first dilute solution = 100.0 ml

2) on second dilution;

3) on third dilution

4) on fourth dilution

5) on fifth dilution

Thus the concentration of in the final solution is 0.006688 M

moles of =

b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.