Suppose you needed a 0.0250 M sodium thiosulfate solution to conduct 6 titrations. Explain how you would make up this solution using a 0.4782 M stock solution of sodium thiosulfate. Include all necessary measured quantities, lab techniques and the glassware you would use.

Explanation:

According to the law of dilution,

The given data is as follows.

    = 0.4782,     = ?

    = 0.025 ,     = 250 mL

Hence, we will calculate the value of as follows.

                          =

                          = 13.07

Thus, we can conclude that we need 13.07 mL 0.4782 M sodium thiosulfate solution using pipette.

the answers are

c and c