Question

Chapter is over Equilibrium Chemistry and connecting to Gravimetric systematic solving.

6. Write a charge balance equation and mass balance equations for the following solutions. Some solutions may have more than one mass balance equation.
a. 0.1 M NaCL

b. 0.1 M HCl

c. 0.1 M HF

g. 0.10 M HCl and 0.05 M NaNO2

Answer 1

Charge balance NaCl -------->   Na⁺   +   Cl^-        Mass balance n_NaCl = n_Na⁺ + n_Cl^-  

                        HCl   --------->    H⁺ + Cl^-     Mass balance n_HCl = n_H⁺ + n_Cl^-  

                       HF    --------->   H⁺ + F^-              Mass balance n_HF = n_H⁺ + n_F^-  

                       HCl +    NaNO₂ -------->    H⁺ + Cl^- + Na⁺ + NO₂^-1

                      Mass balance n_HCl +n_NaNO2 = n_H⁺ + n_Cl^-+ n_Na⁺+ n_NO2^-1