solution R(0.05 mL)Methyl red solution RNeutral to methylredNeutral tophenolphtalein4.5 – 6.0Orange-red< 8.0Phenolphthaleinsolution R (0.05 mL)Colourless; pink or redafter adding 0.05 mLof 0.1 M baseReactionpHIndicatorColourAcid< 6Methyl red solution ROrange or redBromothymol bluesolution R1...
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