GIPHOTOSTOCK / SCIENCE PHOTO LIBRARY GIPHOTOSTOCK / SCIENCE PHOTO LIBRARY
Barium chromate precipitate, 2 of 3. Barium chromate (BaCrO4) precipitate formed by adding potassium chromate solution (K2CrO4) drop by drop to barium chloride solution (BaCl2). Both solutions are 0.5 M concentration. The reaction is BaCl2 + K2CrO4 -> BaCrO4 + KCl. This is an example of a double replacement reaction.
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