Indicators used during titration
What is the main differences between phenolphthalein and methyl orange. What are their colour changes and why are those particular indicators commonly used?
Original post by Gizos
Methyl Orange has a pH range of 3.2-4.4 and is red in acid and yellow in more alkaline solutions.
Phenolphthalein (in ethanol) has a pH range of 8.2-10 and is colourless in acidic conditions and red in alkaline
Phenolphthalein (in ethanol) has a pH range of 8.2-10 and is colourless in acidic conditions and red in alkaline
Thanks, why in ethanol though? so how do you know when the alkali has been neutralised for both?
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