What is the ph of a 0.0075 m concentration of hydrochloric acid hcl? 0.50 1.1 2.1 3.2?

(1) Answers

The chemical formula for the hydrochloric acid is HCl. The concentration of H+ in the solution is also equal to the concentration of the compound.                          concentration of H+ = 0.0075M The pH is calculated through the equation,                        pH = -log[H+] where [H+] is the concentration. Substituting the known values,                          pH = -log(0.0075M) = 2.12   Thus, the pH of the given hydrochloric acid is 2.1. The answer is the third choice.  

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