An ionic equation can be written in place of this molecular equation, which tells what is actually happening at the ionic level in solution. Such an ionic equation is shown below:
A) 2HCl(aq) + Ca(OH)2(aq) -> 2H2O(l) + CaCl2(aq)
B) 2NaOH(aq) + H2SO4(aq) -> 2H2O(l) + Na2SO4(aq)
C) NaCl(aq) + AgNO3(aq) -> AgCl(s) + NaNO3(aq)
D) H2(g) + Cl2(g) -> 2HCl(g)