Ion Reaction Equation for Ca (HCO3)2(Less)+ NaOH and Ion Equation for Ca (HCO3)2(More)

When Ca (HCO3)2 is small: Ca2+2HCO3-+2OH-=2H2O+CaCO3↓+CO32-
When Ca (HCO3)2 is excessive: Ca2++HCO3-+OH-=H2O+CaCO3↓
In writing these equations of ions, which are related to the quantity, we should follow the principle of "little depends on change ", that is, a small amount of that substance is taken as 1, its ions react according to the number ratio in the chemical formula, and the amount of excess ions is determined by the small amount of that substance.

Ion Equation of Ca (HCo3)2 and NaOH

When Ca (HCO3)2 is small: Ca2+2HCO3-+2OH-=2H2O+CaCO3↓+CO32-
When Ca (HCO3)2 is excessive: Ca2++HCO3-+OH-=H2O+CaCO3↓

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