1.

Why is the phenonphthalein guide used in this experiment and not used?

Answer»

ong>Answer:

Phenolphthalein is used as INDICATOR for titrations. It has a weak acid that used, because it CHANGES COLOUR close to PH 7, the pH of the equivalence point of a strong acid with a strong base. The phenolphthalein has an EASY colour change, from colourless to pink.

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