Grade 12th passPhysical Chemistry
Is sodium bicarbonate decomposed by ortho nitrophenol and para nitro phenol
1 Answer
Arun
If nitrophenol has to dissolved in bicarbonate then bicarbonate has to abstract a proton from nitrophenol to from nitrophenolate which is soluble. The pKa value of bicarbonate is 6.37 which is lower than the pKa value of nitrophenol which makes bicarbonate a stronger acid and stronger acids cannot abstract protons from a weaker acid.Hence nitrophenol cannot dissolve in bicarbonate solution.
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