Answered

Molecules on an acid-base indicator react chemically with ions in a solution,
causing the indicator to change color. Which ions in the solution cause this
reaction? (2 points)
O Oxygen ions
O Water ions
O Hdrogen ions
◇ Nitrogen ions



Answer :

GinnyAnswer

Final answer:

Hydrogen ions in the solution interact with the acid-base indicator molecules, causing a color change, crucial for identifying the pH level.


Explanation:

Hydrogen ions (H^+) in the solution cause the chemical reaction with molecules in the acid-base indicator, leading to a color change. These hydrogen ions are a key component in distinguishing between acidic and basic solutions based on the pH level.

Acid-base indicators, such as phenolphthalein, change colors based on the concentration of hydrogen ions in the solution. For example, in more basic solutions with lower hydronium ion concentrations (pH > 8.3), the indicator can appear red or pink due to the interaction with these hydrogen ions.

Choosing the right indicator is crucial in acid-base titrations to detect the equivalence point accurately. Indicators are weak organic acids or bases that undergo a significant color change at specific pH levels, allowing for visual pH determination.


Learn more about Acid-Base Indicators here:

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