AFOQT Practice Test

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A neutral solution has how many hydrogen and hydroxide ions?

  1. An excess of hydrogen ions

  2. More hydroxide ions than hydrogen ions

  3. The same number of each

  4. More hydrogen ions than hydroxide ions

The correct answer is: The same number of each

A neutral solution is defined by having an equal concentration of hydrogen ions (H⁺) and hydroxide ions (OH⁻). This balance occurs at a pH of 7, which is commonly considered neutral on the pH scale. The equivalence in the amount of H⁺ and OH⁻ ions is what maintains the pH at this neutral level, meaning that neither ion is present in a greater amount than the other. In contrast, a solution is acidic if it has more hydrogen ions than hydroxide ions, and it is basic if it has more hydroxide ions than hydrogen ions. Therefore, the presence of equal amounts is a key characteristic of neutrality in a solution.

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