`n_1[C_1]+n_2[C_2]+... = m_1[A_1]+m_2[A_2]+...`

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The charge balance equation is used to solve for a missing concentration of an ion. This neutrality equation is designed in a way where the molarity concentrations of cations along with their charge coefficients equal the molarity concentrations of anions and their charge coefficients. 

Description

The equation is 

or in summation form

where

• n_i is the i^th species of cation charge coefficient. 
• C_i is the i^th species of cation molar concentration in units of (mol/L)
• m_i is the i^th species of an anion charge coefficient. 
• A_i is the i^th species of an anion molar concentration in units of (mol/L)

Related Topics

• Mass Balance
• Balance de Masa (in Spanish)

References

Harris, 9th Edition.  Pp.170