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The boxes below contain a series of 0.1 M aqueous solutions of increasing pH where A is the solution of lowest pH and E is the solution of highest pH. Match each box with the correct compound.
phenol,pKa = 9.89
cyanide ion,pKb = 4.69
pyridine,pKb = 8.75
hydrogen sulfate ion,pKa = 1.92
sodium nitrate
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