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# Molar hydrogen ion watch

1. When we say molar hydrogen ion. What do we mean by molar?

Thanks.
2. well, you wouldn't say that on its own.

You might well say 1.5 molar hydrogen ion, though. Meaning the concentration of H+ is 1.5 molar

molar (M) means the number of moles of something dissolved in a litre of solvent (usually water)

So if you have 1 molar HCl, you will have 1 molar hydrogen ions.

but if you have 1 molar H2SO4, you would have 2 molar hydrogen ions (because each mole of suphuric acid generates two moles of H+)
3. "Molar hydrogen ion" by itself doesn't make sense. Do you mean the molarity (not to be confused with the number of moles) of hydrogen ions? This means the concentration of hydrogen ions.

E.g. 2 molar H+ would mean the concentration of H+ is 2 mol dm^-3.
4. (Original post by Plato's Trousers)
well, you wouldn't say that on its own.

You might well say 1.5 molar hydrogen ion, though. Meaning the concentration of H+ is 1.5 molar

molar (M) means the number of moles of something dissolved in a litre of solvent (usually water)

So if you have 1 molar HCl, you will have 1 molar hydrogen ions.

but if you have 1 molar H2SO4, you would have 2 molar hydrogen ions (because each mole of suphuric acid generates two moles of H+)
Thanks a lot. That makes it clear.
5. (Original post by Kyri)
"Molar hydrogen ion" by itself doesn't make sense. Do you mean the molarity (not to be confused with the number of moles) of hydrogen ions? This means the concentration of hydrogen ions.

E.g. 2 molar H+ would mean the concentration of H+ is 2 mol dm^-3.
Thanks a lot for the clarification.

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