solvay process

Science Dictionary
Solvay process   (sŏl'vā, sôl-vā')  Pronunciation Key 
A process used to produce large quantities of sodium carbonate. In the Solvay process, salt (sodium chloride) is treated with ammonia and then carbon dioxide, producing sodium bicarbonate and ammonium chloride. The ammonium chloride is usually combined with lime to produce ammonia (recycled for reuse) and calcium chloride.
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