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111. Solving a chemistry problem
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Uploaded: 22.08.2022
Content: 31.rar 33,73 kB
Refunds: 0
Uploaded: 22.08.2022
Content: 31.rar 33,73 kB
Product description
Calculate the mass fraction (%) of MnO2 in natural pyrolusite if a sample weighing 0.4000 g was treated with dilute H2SO4 containing 0.6000 g of H2C2O4*2H2O, and the excess of oxalic acid was titrated with 23.26 ml of 0.1129 N. KMnO4( fequiv=1/5).
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