Carbonic acid is [[carbon dioxide]] dissolved in water, forming a [[weak acid]] with formula H<sub>2</sub>CO<sub>3</sub>. Its pH under normal concentration is 5.65.
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'''Carbonic acid''' is [[carbon dioxide]] dissolved in water, forming a [[weak acid]] with formula H<sub>2</sub>CO<sub>3</sub>. Its [[pH]] under normal concentration is 5.65.
It is the main component in naturally occurring [[acid rain]].
It is the main component in naturally occurring [[acid rain]].