Indicators are substances that change colour when they are added to acidic or alkaline solutions. Litmus, phenolphthalein, and methyl orange are all indicators that are commonly used in the laboratory.
The table shows the colour of methyl orange and phenolphthalein in solutions of different pH:
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Answer:
Indicators are substances that change colour when they are added to acidic or alkaline solutions. Litmus, phenolphthalein, and methyl orange are all indicators that are commonly used in the laboratory.
The table shows the colour of methyl orange and phenolphthalein in solutions of different pH:
Methyl orangeRedYellowYellow
PhenolphthaleinColourlessColourlessPink