What is the pH when the hydrogen ion concentration is 1 x 10-3 M? O a. 3.3
O b. 4
O c. 2.7
O d. 2
O e. 3

e. 3

Explanation:

In order to solve this problem we need to keep in mind the definition of pH:

As stated by the problem, the hydrogen ion concentration, [H⁺], is 1x10⁻³ M.

As all required information is available, we now can calculate the pH:

The correct option is thus e.

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