Question

For the chemical reaction hclo4(aq)+naoh(aq)⟶h2o(l)+naclo4(aq) write the net ionic equation, including the phases.

Answer 1

  The net   ionic equation  is as below

 H^+(aq)  +  H^-(aq)  →  H2O(l)  

         Explanation
from the chemical equation

HClO4(aq)  + NaOH (aq)  →    H2O(l)  + NaClO4(aq)

write  ionic equation
that is, 
H^+(aq)+ClO4^-(aq) + Na^+(aq) +OH^-(aq)→ H2O(l) + Na^+(aq)+ClO4^-(aq)

cancel the spectator  ions   in both side(ions that do no take place in  a chemical equation)
that  ClO4^-   and Na^+

the net  ionic is therefore
= H^+(aq)  +  OH^-(aq)   →  H2O(l)