2. A 100 ml wastewater sample containing phenol was titrated with bromine generated from KBr according to the reaction equation
С6Н5ОН ЗВr2 = С6Н2ОНВr3 ЗВг- ЗН
What is the concentration of phenol in waste water (µg/ml) if the electrolysis was carried out for 5 minutes at a current of 30 mA?

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