Question: Which solute would provide the sharper end point in a titration with 0.10 M NaOH: (a) 0.10 M nitrous acid or 0.10 M iodic acid?

Which solute would provide the sharper end point in a titration with 0.10 M NaOH:
(a) 0.10 M nitrous acid or 0.10 M iodic acid?
(b) 0.10 M hypochlorous acid or 0.10 M pyruvic acid?

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