1. Sulfate contained in 3.151 g of a sample was precipitated by homogeneous precipitation by adding 50.0 ml of 0.0264 M Ba EDTA solution and slowly acidifying to release barium ions. After precipitation was complete, the solution was buffered to pH = 10 and diluted to exactly 250 ml. Titration of 25.0 ml of the clear solution required 28.7 ml of a standard 0.0154 M Mg2+ solution. Calculate the % content of Na2SO4*10H2O in the sample.

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