If hydrogen ions and hydroxide ions are nearly balanced in a solution, what colour will universal indicator show?
Answer and explanation
Correct answer: Green
When hydrogen ions and hydroxide ions are present in nearly equal effective amounts, their acid and base effects balance, giving an approximately neutral solution. Neutral water has pH close to 7. Universal indicator shows green around pH 7. Red and orange indicate acidic conditions, whereas violet indicates a strongly alkaline condition. Therefore the expected colour is green, making option B correct.
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What is the correct answer to this question?
Green
Why is this the correct answer?
When hydrogen ions and hydroxide ions are present in nearly equal effective amounts, their acid and base effects balance, giving an approximately neutral solution. Neutral water has pH close to 7. Universal indicator shows green around pH 7. Red and orange indicate acidic conditions, whereas violet indicates a strongly alkaline condition. Therefore the expected colour is green, making option B correct.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
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