Practice Problem: Gravimetric Analysis

The video tutorial explains a gravimetric analysis problem involving a solid mixture containing calcium sulfate. The mixture is dissolved and treated with barium nitrate, resulting in barium sulfate precipitation. The tutorial guides through the stoichiometry calculations to determine the mass of calcium sulfate that reacted and calculates its percentage in the original mixture.

What is the mass of the solid mixture containing calcium sulfate before it was dissolved in water?

How much barium sulfate was precipitated from the reaction?

What stoichiometric relationship exists between calcium sulfate and barium sulfate in this reaction?

What is the molar mass of calcium sulfate used in the calculations?

What percentage of the solid mixture was calcium sulfate based on the gravimetric analysis?