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Hydronium is the protonated water molecule: H3O+

It is found in pure water formed by autoprotolysis, at concentration of 1.0*10-7 mol/L:

H2O + H2O <<--> H3O+ + OH-

That's why pH of pure water is 7.0 (= -log[H3O+] = -log(1.0*10-7)

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13y ago
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13y ago
AnswerWe use ph as the symbol to express hydronium ion concentration.
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14y ago

The measure of the concentration of hydronium ions in a solution is the pH.

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13y ago

Hydronium concentration is symbolized by [H3O+], pH is another measurement symbol:

pH = -log[H3O+]

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15y ago

The answer is H+.

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12y ago

OH- is the 'hydroxide ion' symbol

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Q: What is the symbol for hydronium?
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