水垢成分主要为CaCO3和Mg(OH)2.2CH3COOH+CaCO3→(CH3COO)2Ca+CO2↑+H2O；2CH3COOH+Mg(OH)2→(CH3COO)2Mg+2H2O.离子方程2CH3COOH+CaCO3→2CH3COO- + Ca2+ + CO2↑+H2O；2CH3COOH+Mg(OH)2→2CH3COO- + Mg2+ +2H2O....