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TURTLE ROCK SCIENTIFIC / SCIENCE PHOTO LIBRARY TURTLE ROCK SCIENTIFIC / SCIENCE PHOTO LIBRARY
Potassium carbonate reacts with sulfuric acid. Solid potassium carbonate (K2CO3) powder is added to a beaker with 0.1 M sulfuric acid (H2SO4). In the reaction, H2SO4 + K2CO3 -> K2SO4 + CO2 + H2O, bubbles of carbon dioxide gas (CO2) are produced. This is an example of a carbonate-acid reaction, which in itself is a double-replacement reaction followed by a decomposition reaction.
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