IGNOU CHE 4 2018 - Calculate the pH of 1.0 x 10-8 M HCl solution.

Question

Calculate the pH of 1.0 x 10^-8 M HCl solution.

24 Jan 2018

Answer :

Word Count : 196

If we use the relation, pH = – log [H3O+], we get pH equal to 8. But this is not correct because an acidic solution cannot have pH greater than 7. It may be noted that in very dilute acidic solution, when H+ concentrations from acid and water are comparable, the concentration of H+ from water cannot be neglected.

Therefore,
[H+] total = [H+] acid +

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