Chemistry, asked by rizikiprime95, 10 months ago

How to prepare methylene indicator

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Answered by sarayu56

Dissolve 0.5 g of bromothymol blue in 500 mL of water. Add a drop of ammonia solution to turn the solution deep blue in colour. Prepare methylorange acid-base indicator, pH < 3.1 red to pH > 4.4 yellow-orange. It is best for solutions with concentration > M/5.

rizikiprime95: Thank you

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