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ELECTROLYSIS OF POTASSIUM IODIDE
KI (aq.) with Phenolphthalein in a U-Tube.
Graphite electrodes connected to 10v power supply create hydrogen gas bubbles and hydroxide at the cathode which turns the solution basic shown by the pink color. The solution around the anode turns brown as I2 is generated to form I3-.
Copyright:© 2015 Richard Megna - Fundamental Photographs
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