Multiple choice

When HCl(aq) is completely neutralised by NaOH(aq), the hydrogen ion concentration in the resulting mixture will be

  1. greater than the concentration of the hydroxide ions

  2. lesser than the concentration of the hydroxide ions

  3. equal to the concentration of the hydroxide ions

  4. sometime greater and sometime lesser
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In a neutralisation reaction equivalent amount of hydronium and hydroxide ions react in a solution to produce salt and water, so the concentration of H+ is always equal to  the concentration of the hydroxide ions.

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