chemistry help

This question may require the use of the Chemistry Reference Tables or the Periodic Table of Elements.

When HCl(aq) is exactly neutralized by NaOH(aq), the hydrogen ion concentration in the resulting mixture is

  1. always less than the concentration of the hydroxide ions

  2. always greater than the concentration of the hydroxide ions

  3. always equal than the concentration of the hydroxide ions

  4. sometimes greater and sometimes less than the concentration of the hydroxide ions

 
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