Measurements show that the ph of a particular lake is 4.0. what is the hydrogen ion concentration of the lake? measurements show that the ph of a particular lake is 4.0. what is the hydrogen ion concentration of the lake? 4% 10-4 m 10-10 m 104 m 4.0 m

10⁻⁴ M is the hydrogen ion concentration of the lake.

Explanation:

pH is defined as the negative logarithm of the concentration of hydrogen ions.

Thus,  

pH = - log [H⁺]

pH scale generally runs from 1 to 14 where pH = 7 represents neutral medium, pH < 7 represents acidic medium and pH > 7 represents basic medium.

Given that, pH = 4.0

So,

4.0 = - log [H⁺]

OR,

[H⁺]  = antilog (-4) = 10⁻⁴ M

10⁻⁴ M is the hydrogen ion concentration of the lake.

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