Comparison of pH in Diluted Strong vs Weak Acids

Very Hard General Chemistry Acids And Bases

In the context of acid-base chemistry, consider a hypothetically infinite dilution of a strong acid and a weak acid. A 0.1 M solution of hydrochloric acid (HCl), a strong acid, is compared to a 0.1 M solution of acetic acid (CH₃COOH), a weak acid. As both are diluted to extremely low concentrations, analyze the behavior of their respective pH levels.

What happens to the pH of the HCl solution as it becomes infinitely diluted compared to the pH of the acetic acid solution at the same dilution?

The pH of the HCl solution will approach 7, while the pH of the acetic acid will remain below 7.

Both pH values will approach 7, but the HCl solution will reach 7 more quickly.

The pH of the HCl solution will remain lower than that of the acetic acid solution.

The pH of both solutions will become neutral at pH 7.

Hint

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