The Theory of Electrolytic Dissociation And Some of Its Applications
The book The Theory of Electrolytic Dissociation And Some of Its Applications was written by author Harry Clary Jones Here you can read free online of The Theory of Electrolytic Dissociation And Some of Its Applications book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The Theory of Electrolytic Dissociation And Some of Its Applications a good or bad book?
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The molecules of phenol- phthalei'n are, therefore, colorless. If we add an alkali, say sodium hydroxide, to phenolphthalei'n, the sodium salt is formed ; but this dissociates at once into the cation sodium, and the complex organic anion, which is deeply colored. The characteristic color of phenolphthalei'n, acting as an indicator for an alkali, is, then, always the color of the complex anion. If to the colored solution a little acid is added, the original phenolphthalem is formed, and is color...less. Take, on the other hand, the basic indicator, cyanine; the molecules of the free base are blue. It is a weak base, and, therefore, but little dissociated. Add acid ; the salt is formed, which at once dissociates. The complex organic cation is colorless, and, hence, on adding acid, the color due to the molecules of the free base disappears. This is exactly the opposite of the case first considered. Finally, take methyl orange, where the molecules are red. Add a base, the salt is formed, and this breaks down at once into ions.
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