Vinegar with indicator

Vinegar with indicator

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Credit: ANDREW LAMBERT PHOTOGRAPHY/SCIENCE PHOTO LIBRARY

Caption: Vinegar with universal indicator added. Universal indicator changes colour depending on whether it has been added to an acid or an alkali. Vinegar mainly comprises a solution of ethanoic (acetic) acid. In acidic solutions, as seen here, universal indicator turns a colour between red (strong acid) and pale orange (weak acid). In alkaline solutions, it turns between green (weak alkali) and purple (strong alkali).

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Keywords: acid, acidic, beaker, chemical, chemistry, domestic, glassware, household, indicator, liquid, sarsons, solution, universal, vinegar

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