What is [H30+] in a solution with a pH of 10.4?

(H30+) = 3,98 x10 ^-11  M

Explanation:

The pH gives us an idea of the acidity or basicity of a solution. More precisely, it indicates the concentration of H30 + ions present in said solution. The pH scale ranges from 0 to 14: from 0 to 7 corresponds to acid solutions, 7 neutral solutions and between 7 and 14 basic solutions. It is calculated as:

pH = -log (H30 +)

We solve (H30+) and calculate:

(H30+) = antilog - pH

(H30+) = antilog - 10.4

(H30+) = 3,98 x10 ^-11  M

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