单词	carbonic acid
释义	carbonic acid /kɑːˌbɒnɪk ˈasɪd / noun [mass noun] A very weak acid formed in solution when carbon dioxide dissolves in water. Chemical formula: H2CO3. Finally, if ammonium carbonate is placed in water, the weak base ammonium carbonate and weak acid carbonic acid are produced.... In limestone caves, the main source of this acidity is carbon dioxide dissolved to form weak carbonic acid in meteoric waters, although sulphuric acid may be important in thermal waters. Initially, the ammonia and carbon dioxide reacts with water to form the weak electrolytes, ammonium hydroxide and carbonic acid.
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