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Nitrophenol is a colorless weak monoprotic acid (pK_(a) = 7.2) whose conjugate base is bright yellow. To 2.00 mL of a solution of 0.0100M nitrophenol is added 1.00 M NaOH in 0.01mL portions, and the adsorbance of the solution at 485 nm is monitored. what does the graph of A_(485) as a function of added volume of NaOH look like ? |
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