Comparing pH Values of Acid and Base Solutions

Medium General Chemistry Acids And Bases

In a laboratory experiment, a student is tasked with determining the strength of various acids and bases. The student prepares a solution of hydrochloric acid (HCl) and measures its pH. The pH of the solution is found to be 1. In contrast, the student also prepares a solution of sodium hydroxide (NaOH) and measures its pH, which is determined to be 13. Based on this scenario, the student is asked to understand the relationship between the concentration of hydrogen ions (H⁺) and hydroxide ions (OH^-) in the solutions.

Which of the following statements correctly describes the relationship between the pH values of the two solutions and the concentration of H⁺ and OH^- ions?

The hydrochloric acid solution has a higher concentration of hydroxide ions than the sodium hydroxide solution.

The sodium hydroxide solution has a higher concentration of hydrogen ions than the hydrochloric acid solution.

The concentration of hydrogen ions in the hydrochloric acid solution is greater than the concentration of hydroxide ions in the sodium hydroxide solution.

The pH of the hydrochloric acid and the pH of the sodium hydroxide cannot be directly compared.

Hint

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