What is the colour of the universal indicator paper? What is the pH? Explain your observations.
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Commercial soaps are normally slightly basic eg pH 8 This is bec...View the full answer
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Related Book For
Organic Chemistry
ISBN: 9788120307209
6th Edition
Authors: Robert Thornton Morrison, Robert Neilson Boyd
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A substance that alters color in solution over a constrained range of pH values is known as a pH indicator or acid-base indicator. The indicator chemical just needs to alter color slightly in order to be noticed. Indicators work on the basis that they react with water to produce the hydrogen cation H+ or hydronium ion H3O+. The indicator molecule\\\'s color changes as a result of the reaction. Since indicators have distinct color ranges for color change, they can occasionally be combined to provide color changes over a wider pH range.
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