"these two beakers represent solutions of hcl and naoh". describe a third beaker showing the ions that remain after the reaction has gone to completion.

Reacting solutions of HCl and NaOH in a third beaker will produce sodium chloride (NaCl), an ionic salt, and water (H₂O). The balanced chemical equation is:

HCl + NaOH → NaCl + H₂O

The third beaker would then show an aqueous solution since sodium chloride easily dissolves in water. The ions that would be present in the beaker are Na⁺ and Cl⁻ ions.   

You would be correct, boiling water does disinfect contamination.    the property of disinfecting means to kill  germs, bacteria and other pathogens or contamination  that might cause an infection or cause a person to become sickly. a couple methods of disinfecting are using soap, other cleaning supplies or by simply "boiling" the contaminate.  the reason why boiling water disinfects certain attributes is because some cells cannot survive the heat and pressure.