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GIPHOTOSTOCK / SCIENCE PHOTO LIBRARY GIPHOTOSTOCK / SCIENCE PHOTO LIBRARY
Barium carbonate precipitate. Barium carbonate (BaCO3) precipitate formed by adding barium chloride solution (BaCl2) drop by drop to sodium carbonate solution (Na2CO3). Both solutions are 0.5 M concentration. The reaction is Na2CO3 + BaCl2 -> BaCO3 + NaCl. This is an example of a double replacement reaction.
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