What is the complete ionic equation for NaOH(aq) + HCl(aq) H2O(l) + NaCl(aq)?
Since H and NA are in the first column of the periodic table, their ions will both
have ionic form with 1+.
Since Cl is in the second to last column of the periodic table, their ions will both
have ionic form with 1-.
Groups containing both oxygen O and hydrogen H will not be separated.
Using these known ions, we can rewrite the given equation as:
Note: The group OH has ionic form with 1-, because Na has 1+ and NaOH has to be neutral in total, thus the sum 1+ and the ion of OH needs to be 0, resulting in 1- for the group OH.
Eliminate ions that occur on both sides of the arrow:
The 1’s do not have to be explicitly mentioned in the ionic equation: