Explanation:
The pH of a substance can be found by using the formula
[tex]pH = - log[ H^{ + } ][/tex]
where [ H+ ] is the hydrogen ion concentration in the substance
From the question
[ H+ ] = 2.1 × 10-¹² M
To find the pH substitute the value into the above formula
We have
[tex]pH = - log(2.1 \times {10}^{ - 12} ) \\ = 11.6777807 \: \: \: \: \: \: [/tex]
We have the answer as
pH = 11.7
The solution is basic since it lies in the basic region that is from 8 to 14
Hope this helps you
