Question

Calculate the hydrogen ion concentration of a Nitric acid solution with a pH of 2.11.

[H] = _____ (round to 2 decimal places)

Answer 1

0.01 M

Step-by-step explanation:

The hydrogen ion concentration can be found by finding the antilog of the pH

`pH = - log [ {H}^(+) ]`

We have

`2.11 = - log({H}^(+)) \\ find \: \: antilog \: of \: both \: \: sides \\ \\ |{H}^(+)| = {10 }^( - 2.11) \\ = 0.00776...`

We have the final answer as

0.01 M to 2 decimal places

Hope this helps you