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Which indicator is used to find out the strength of an acid or base. How ? |
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Answer» Universal indicators Example: pH scale Universal indicator is used is used to find the strength of an acid or base by changing its colour (pH scale can be used to determine whether a substance is acidic or basic and if it is basic or acidic then how strong it is). In other words we can say it helps us to determine the colour of h+(aq)ions at differnt pH An indicator is a chemical substance that undergoes a colour change at the endpoint. The endpoint of an acid-base titration can be determined using acid-base indicators. Acid Base indicators are either weak organic acids or weak organic bases. The colour change of an indicator depends on the pH of the medium. The un-ionized form of an indicator has one colour, but its ionized form has a different colour.Phenolphthalein\xa0is used to find the strength of caustic soda solution with the help of oxalic acid |
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