f rfoff rooffforoo HERHHIMHHHHHHH RRERERHHH

forforforfor HERHHH MHERHERHHH

CaCO3

CH3COOH

CH3COOH

CH3COOH

CH3COOH

CO2 + H

2O

CO2 + H

2O

CO2 + H

2O

CO2 + H

2O

(CH3COO)

2Ca

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