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What does phenolphthalein indicate when the solution is basic?
- a)It turns dark pink
- b)It turns green
- c)It remains colourless
- d)It turns blue
Correct answer is option 'A'. Can you explain this answer?
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Most Upvoted Answer
What does phenolphthalein indicate when the solution is basic?a)It tur...
When phenolphthalein is added to a basic solution, it changes its color to dark pink. This change helps us know if a solution is basic or not. So, when you see the pink color, you can tell that the solution is basic.
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Community Answer
What does phenolphthalein indicate when the solution is basic?a)It tur...
Explanation:
Phenolphthalein Indicator:
- Phenolphthalein is a pH indicator that changes color in response to the acidity or basicity of a solution.
- It is commonly used in titrations to determine the endpoint of a reaction.
Basic Solution:
- When phenolphthalein is added to a basic solution (pH greater than 7), it turns dark pink or fuchsia.
- This color change indicates the presence of a base in the solution.
Color Change:
- In basic solutions, phenolphthalein molecules interact with hydroxide ions (OH-) present in the solution.
- This interaction causes the phenolphthalein molecule to change its structure, resulting in the dark pink color.
Conclusion:
- Therefore, when phenolphthalein turns dark pink in a solution, it indicates that the solution is basic with a pH greater than 7.
Phenolphthalein Indicator:
- Phenolphthalein is a pH indicator that changes color in response to the acidity or basicity of a solution.
- It is commonly used in titrations to determine the endpoint of a reaction.
Basic Solution:
- When phenolphthalein is added to a basic solution (pH greater than 7), it turns dark pink or fuchsia.
- This color change indicates the presence of a base in the solution.
Color Change:
- In basic solutions, phenolphthalein molecules interact with hydroxide ions (OH-) present in the solution.
- This interaction causes the phenolphthalein molecule to change its structure, resulting in the dark pink color.
Conclusion:
- Therefore, when phenolphthalein turns dark pink in a solution, it indicates that the solution is basic with a pH greater than 7.
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What does phenolphthalein indicate when the solution is basic?a)It turns dark pinkb)It turns greenc)It remains colourlessd)It turns blueCorrect answer is option 'A'. Can you explain this answer?
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