Which pH value corresponds to a strong acid solution?

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Multiple Choice

Which pH value corresponds to a strong acid solution?

Explanation:
Lower pH means higher acidity. The pH scale is the negative logarithm of the hydrogen ion concentration: pH = -log[H+]. A strong acid dissociates completely, so it yields a relatively large [H+] in solution. Among the options, pH 1 has a hydrogen ion concentration around 0.1 M, which is highly acidic and reflects a strong acid solution. pH 7 is neutral, while pH 11 and pH 14 are basic, with very low [H+]. So pH 1 is the correct choice for a strong acid solution.

Lower pH means higher acidity. The pH scale is the negative logarithm of the hydrogen ion concentration: pH = -log[H+]. A strong acid dissociates completely, so it yields a relatively large [H+] in solution. Among the options, pH 1 has a hydrogen ion concentration around 0.1 M, which is highly acidic and reflects a strong acid solution. pH 7 is neutral, while pH 11 and pH 14 are basic, with very low [H+]. So pH 1 is the correct choice for a strong acid solution.

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