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How universal indicator tell a substance is acid or base? |
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Answer» Actually universal indicator is a paper with different pH readings when the universal indicator is dipped into a solution then it changes its colour according to the nature of the solution the pH reading tells us about the nature of the solution whether it is acidic or basic for instance the colour of universal indicator in a highly acidic solution is slightly Orange as the pH value increases the colour turns from Orange to read and then green also the colour of universal indicator in highly basic solution will be violet Universal indicator put in hydrochloric solution then its colour change in red it is acid and its colour change in blue then it is base. |
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