3. Solving a chemistry problem
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75. When analyzing 0.4691 g of technical p-nitrophenol according to Kjeldahl, 50.00 ml of 0.1053 N were placed in the receiver to absorb ammonia. H2SO4 (f=1/2). 21.20 ml of NaOH [T(NaOH/H2SO4)=0.005002] was used for titration of excess acid. Calculate the mass fraction (%) of n-nitrophenol in the sample.
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- Content type File
- Content description 32 kB
- Added to the site 20.08.2023
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If you do not open the file - install the RAR archiver. Inside the archive you will find a solution in Word format.
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3. Solving a chemistry problem
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