36. Solving a chemistry problem
📂 Coursework
👤 Derkach
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4. Calculate the percentage of aluminum in the technical product by photometric determination by the addition method as part of a complex with sodium salt of 2-quinalizarinsulfonic acid under the following conditions:
Sample weight, g Diluted sample volume Components Colored solution volume, ml Optical density
Al3 , μg/ml Reagent, ml H2O, ml
4.97 (dissolved in 500 ml) 250
250 0
5.0 20.0
20.0 5.0
0 50.0
50.0 0.389
0.514
Sample weight, g Diluted sample volume Components Colored solution volume, ml Optical density
Al3 , μg/ml Reagent, ml H2O, ml
4.97 (dissolved in 500 ml) 250
250 0
5.0 20.0
20.0 5.0
0 50.0
50.0 0.389
0.514
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