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What is the pH of a 0.8 M solution of HCI?

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Answer: pH = 0.1

Explanation: pH = - log[H3O^+] .

HCl reacts with water : HCl + H2O -> Cl^- + H3O^+

So [H3O^+] = c(HCl) = 0.8 M

pH = - log(0.8) = 0,0969

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