SCIENCE PHOTO LIBRARY SCIENCE PHOTO LIBRARY
Dropping bottles containing potassium chromate solution (left) and silver nitrate solution (right). These react to form a red precipitate of silver chromate. The reaction is given by: K2CrO4 (aq) + 2AgNO3 (aq) = Ag2CrO4 (s) + 2KNO3 (aq).
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