Question

question 13
1 pts
which of the following statements is true?
acids and bases will neutralize each other.
bases will increase the ph of a solution.
acids and bases cannot mix together.
acids, but not bases, can change the ph of a solution.
acids donate hydroxide ions (oh–); bases donate hydrogen ions (h+).

Explanation:

• Analyze each option:
• Option 1: Acids (donate \(H^+\)) and bases (donate \(OH^-\) or accept \(H^+\)) react in a neutralization reaction to form salt and water, so they neutralize each other. This is correct.
• Option 2: Bases increase the pH (since they are alkaline, pH > 7 for aqueous solutions), but the first option is a more fundamental and always - true statement about acid - base behavior (neutralization). Also, the question is about which is true, and the first option's statement is a core acid - base reaction principle.
• Option 3: Acids and bases can mix (they react when mixed, so they can be in the same solution during the reaction process), so this is false.
• Option 4: Both acids and bases can change pH (acids lower pH, bases raise pH), so this is false.
• Option 5: Acids donate \(H^+\), bases donate \(OH^-\) (or accept \(H^+\)), so this is false.

Answer:

A. Acids and bases will neutralize each other.