Solution 1 has a pH of 6.4, Solution 2 has a pH of 8.1, and Solution 3 has a pH of 4.8. Which solution has the highest concentration of hydrogen ions (
H
+
H
+
)?

Question

BlackTom AI · Accepted Answer

To tackle the question, I’ll lay out the core concept first and then evaluate each option.
Understanding: pH is a negative logarithm of hydrogen ion concentration: pH = -log10[H+]. Lower pH means higher [H+], and higher pH means lower [H+]. So the solution with the lowest pH should have the highest hydrogen ion concentration.
Option 1: "Solution 3". This option corresponds to the solution with pH 4.8, which is the lowest pH among the three given values. Since a smaller pH indicates a larger [H+], this solution should have a higher hydrogen ion concentration than the others.
Option 2: "Solution 1". This option corresponds to the solution with pH 6.4. A pH of 6.4 is less acidic than 4.8, meaning its [H+] is lower. Therefore, it does not have the highest hydrogen ion concentration; its [H+] is less than that of the pH 4.8 solution but more than that of the pH 8.1 solution.
Option 3: "Solution 2". This option corresponds to the solution with pH 8.1, which is the most basic (least acidic) of the three. A higher pH indicates a smaller [H+], so its hydrogen ion concentration is the lowest among the three options.
Putting the pieces together: comparing the three, the solution with the smallest pH (4.8) has the largest [H+], while 6.4 and 8.1 correspond to progressively lower [H+] respectively. The key idea is that hydrogen ion concentration decreases as pH increases, so the 4.8 pH solution dominates in [H+].
In summary, because [H+] is inversely related to pH, the option with the lowest pH value yields the highest hydrogen ion concentration, whereas the options with higher pH values correspond to lower [H+].

Solution 1 has a pH of 6.4, Solution 2 has a pH of 8.1, and Solution 3 has a pH of 4.8. Which solution has the highest concentration of hydrogen ions ( H + H + )?

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