Posted by **Gabby** on Monday, April 28, 2008 at 2:22am.

The capacity of a large irregularly shaped vessel cannot be computed from geometric data. As a result, it is decided that the volume be established from analytical data. The vessel is filled to its capacity mark with calcium-free water. A known small amount of a concentrated calcium solution is added, and a homogeneous solution is obtained by stirring. The volume of the solution added is insignificant with respect to volume of the vessel.

In the experiment, 350 mL of a solution 0.735 M in Ca are added to the vessel. A 50.00 mL portion of the liquid in the vessel is removed after stirring and titrated with 0.001000 M EDTA. What is the capacity of the vessel in gallons if 32.21 mL of EDTA were required to reach the endpoint? One gallon is 3.78 liters.

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