4.1.10. A chemist attempts to prepare some very pure crystals of borax (sodium tetraborate, Na 2 B…

4.1.10. A chemist attempts to prepare some very pure crystals of borax (sodium tetraborate, Na 2 B…

4.1.10. A chemist attempts to prepare some very pure crystals of borax (sodium tetraborate, Na2B4O7 . 10H2O) by dissolving 100 g of Na2B4O7 in 200 g of boiling water. He then carefully cools the solution slowly until some Na2B4O7 . 10H2O crystallizes out. Calculate the grams of Na2B4O7 . 10H2O recovered in the crystal per 100 g of total initial solution (Na2B4O7 and 10H2O), if the residual solution at 55°C after the crystals are removed contains 12,4% Na2B4O7

4.1.10. A chemist attempts to prepare some very pure crystals of borax (sodium tetraborate, Na 2 B…

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