# How can we use conductivity measurements of water to find hydrogen ion concentration of water?

How can we use conductivity measurements of water to find the hydrogen ion ($\mathrm{H}^+$) concentration in water?

• For the question are you considering that H+ is the only cation? Or is your solution filled with an assortment of cations and anions. – Ed Yablecki Jan 12 '16 at 11:26
• It is pure water. No other ions are present. – Oddharak Tyagi Jan 12 '16 at 13:30
• hmmm...are you allowed just to use the pH and figure from there? – Ed Yablecki Jan 12 '16 at 16:23
• No, we want to find H+ ion concentration using the conductivity method. We want to find the pH using that. – Oddharak Tyagi Jan 13 '16 at 13:55
• Isn't that what a pH meter does? – David White Feb 22 '19 at 16:41

• Be careful . $H_2$ and $O_2$ will form. Clearly that is outside the scope of Ohm's law. – my2cts Nov 3 '19 at 10:10