Question

A chemist must prepare of aqueous calcium sulfate working solution. He'll do this by pouring out some aqueous calcium sulfate stock solution into a graduated cylinder and diluting it with distilled water. Calculate the volume in of the calcium sulfate stock solution that the chemist should pour out. Round your answer to significant digits.

Answer 1

The given question is incomplete. The complete question is:

A chemist must prepare 400 mL of 1.00 M aqueous aluminum sulfate working solution. He'll do this by pouring out 1.82 M aqueous calcium sulfate stock solution into a graduated cylinder and diluting it with distilled water. Calculate the volume in ml of the calcium sulfate stock solution that the chemist should pour out. Round your answer to 4 significant digits.

Answer: 219.8 ml

Step-by-step explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.

According to the neutralization law,

`M_1V_1=M_2V_2`

where,

`M_1`= molarity of stock calcium sulphate solution = 1.82 M

`V_1` = volume of stock calcium sulphate solution = ?

`M_2` = molarity of dilute calcium sulphate solution = 1.00 M

`V_2` = volume of dilute calcium sulphate solution = 400 ml

`1.82* V_1=1.00* 400`

`V_1=219.8ml`

Therefore, the volume of of the calcium sulfate stock solution that the chemist should pour out is 219.8 ml