When the pH of a solution is 12.83, what is [H+]?

1 Answer
Ryuu
Jun 23, 2017

There are #1.479 xx 10^-13# concentration of hydrogen ions #mol/L#.

Explanation:

Because pH is a logarthmic scale, we can use the formula: #[H^+] = 10^("-pH")#. Where...
=> #[H^+]# is the concentration of hydrogen ions in the solution.
=> #pH# is the pH of the solution.
=> Where #10# is the base of the power - it's a logarithm formula.

We can now just sub in the values and solve for [#H^+]#.

#[H^+] = 10^("-pH")#

# = 10^(-(12.83))#

# = 1.479108388 xx 10^-13#

We can round (if required) to #1.479 xx 10^-13#.

Thus, there are #1.479 xx 10^-13# concentration of hydrogen ions #(mol)/L#.

Hope this helps :)

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