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was phenolphthalein a good choice for determining the endpoint of each titration? suggest an indicator that...

was phenolphthalein a good choice for determining the endpoint of each titration? suggest an indicator that would work uniquely for the strong acid/ strong base titration in the lab (would not work for the weak acid/ strong base titration)

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Answer #1

phenapthalien is generally used in acid base titrations which indicates the completion of reaction by its colour change. it is particularly used inacid base titrations only, not meant for each titration.

pH ranhe of phenapthalien is 8.2 -10.0

colour in acid( colourless) and base ( magenta).

this phanapthlein can be used in strong acid( HCl) and strong base( NaOH) titration

methyl orange , methyl blue indicators can also be used.

methyl oragne pH range 4.5-6 ( specific for strong acid and weak base)

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