21. Solving a chemistry problem
📂 Coursework
👤 Derkach
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2. A sample of technical phenol weighing 4.205 g after treatment with NaOH solution was transferred to a 50 ml flask and brought to the mark with water. With high-frequency titration of a 1.00 ml sample, the following results were obtained. Calculate the mass fraction (%) of phenol in the sample, if V1 is the volume of 0.02 N HCl solution used to neutralize free alkali.
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