Question

A chemist must prepare 500. L of 43.0 uM aqueous silver(II) oxide (AgO) working solution. He'll do this by pouring out some 0.000204 M aqueous silver(II) oxide stock solution into a graduated cylinder and diluting it with distilled water.

Calculate the volume in mL of the silver(II) oxide stock solution that the chemist should pour out. Be sure your answer has the correct number of significant digits.

Answer 1

Answer:

105.392 litres

Explanation:

Volume required = 500L

Molarity of required solution = 43uM

Molarity of stock solution = 0.000204M

500L of 43uM solution requires 500 × 43uM = 0.0215M of solute

That is quantity of stock required = 0.0215/0.000204 = 105.39 litres of 0.000204M of

silver(II) oxide stock solution should be poured out