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H+ Concentration in Solution?
Why is it true that the Hydronium ion concentration is the same in 100 mL of a .10 M NaOH solution as it is in 10 mL of a 0.10 M NaOH solution.
1 Answer
- jcherry_99Lv 78 years agoFavorite Answer
Because M which is short for moles / Liter is the same for both. Consider what you are actually saying.
Concentration means ratio.
In a 100 mL solution it is true that you have more [H+] ions floating around, but it is also true that there are more water molecules around to absorb all those [H+] ions.
Remember ratios mean equal amounts when division has taken place. If you have an acid with a concentration of 1 mol / Liter, it will still be 1 mol/Liter when you cut the amount in half. That's how ratios work.
