Litmus in an acidic solution appears as which color?

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Study for the IGCSE Edexcel Chemistry Test. Access flashcards and multiple choice questions with hints and explanations. Get ready for your exam!

Multiple Choice

Litmus in an acidic solution appears as which color?

Explanation:
Litmus is a pH indicator that changes colour with hydrogen ion concentration. In acidic solutions there are many H+ ions, which shifts the dye to red. In basic solutions it goes blue, and in neutral or weakly acidic solutions it can appear purple as it passes through its transition range (about pH 4.5–8.3). So for an acidic solution, litmus appears red.

Litmus is a pH indicator that changes colour with hydrogen ion concentration. In acidic solutions there are many H+ ions, which shifts the dye to red. In basic solutions it goes blue, and in neutral or weakly acidic solutions it can appear purple as it passes through its transition range (about pH 4.5–8.3). So for an acidic solution, litmus appears red.

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