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the claim

A brown color appears at the end point during titration with phenolphthalein indicator

the verdict

REFUTED

the evidence says no

Recorded sources

0 sources for · 3 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

AS REPORTEDno primary record reached; this is what the reporting says

Is it true that a brown color appears at the end point during titration with phenolphthalein indicator?

No. Phenolphthalein turns pink (or fuchsia) in basic solutions and is colorless in acidic solutions, rather than turning brown at the end point of a titration.

Verdict: REFUTED · 0 sources for, 3 against · Last checked 6 Aug 2026

The analysis

Judged against the evidence record for claims of this kind.

Evidence against · 3

Wikipedia: Phenolphthalein

Reference article covering this claim directly

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Wikipedia: Phenolphthalein. (n.d.). Wikipedia. https://en.wikipedia.org/wiki/Phenolphthalein

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More against · 2

Macmillan Pub. Co.: Experiments in general chemistry : a laboratory program to accompany Petrucci's General chemistry, sixth edition

1993

States that the phenolphthalein end point is faintly pink, not brown.

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S, W. G. (1993). Macmillan Pub. Co.: Experiments in general chemistry : a laboratory program to accompany Petrucci's General chemistry, sixth edition. Macmillan Pub. Co.. https://archive.org/details/experimentsingen0000weis

Prentice Hall: Experiments in general chemistry

2002

Indicates the phenolphthalein end point color is faintly pink.

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G, G. T. (2002). Prentice Hall: Experiments in general chemistry. Prentice Hall. https://archive.org/details/experimentsingen08edgrec_b2h6

2 recorded entries grouped as this source

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Prentice Hall: Experiments in general chemistry

2002

Confirms the phenolphthalein end point is faintly pink.

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G, G. T. (2002). Prentice Hall: Experiments in general chemistry. Prentice Hall. https://archive.org/details/experimentsingen0000grec

Related receipts

Is it true that the pH at the equivalence point of a titration is not always seven? SUPPORTED related question, same topic
Is it true that the equivalence point in a titration is the point at which the reaction is complete? SUPPORTED related question, same topic

What does the evidence say?

Judged against the evidence record for claims of this kind.

Receipt History

first checked06 Aug 2026

judged → REFUTED · 006 Aug 2026

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