Question
How is it determined whether a substance is acidic, basic or neutral?
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Answer
- In the pH scale, the pH of solutions varies from 0 to 14 in accordance with the strength of the acids or base.
- The pH scale shows different colours at different values of pH. Colour from dark red to yellow or from pH value 0 to 6 indicates the substances are acidic.
- Colour from light blue to violet or from pH value 8 to 14 indicates the substances are basic.
- Green colour or pH value 7 indicates the substances are neutral.
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