Grade 11 Physical Sciences · Chemical Change

Use acid-base indicators

Explain what an indicator is and give its colour in acids or bases (phenolphthalein turns pink in a base).

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What Are Indicators & How Do We Use Them? | Chemical Tests | Chemistry | FuseSchoolFuseSchool - Global Education

Acid–base indicators | Acids and bases | AP Chemistry | Khan AcademyKhan Academy

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Question 1.8 · November 2024 · Paper 2 · Provincial · 2 marks

1.8 Which ONE of the following indicates the CORRECT colour of phenolphthalein in HC

ℓ

and NaOH?(2)

A HC $ℓ$ : yellow; NaOH: blue
B HC $ℓ$ : colourless; NaOH: pink
C HC $ℓ$ : pink; NaOH: colourless
D HC $ℓ$ : blue; NaOH: yellow

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