Which net ionic equation describes the reaction between naoh( aq) and hcl( aq)?

na +( aq) + oh –( aq) → naoh( aq)
oh –( aq) + h +( aq) → h2o( l)
na +( aq) + cl –( aq) → nacl( s)
oh –( aq) + h +( aq) → h2o( l) + na +( aq) + cl –( aq)

OH–( aq) + H+( aq) → H2O( l)

Explanation:

Step 1: Data given

Hydrochloric acid = HCl

⇒ dissociates in H+ and Cl-

Sodium hydroxide = NaOH

⇒ dissociates in Na+ and OH-

Step 2: The equation

NaOH(aq) + HCl(aq)  → Na+ + OH- + H+ +Cl-

Na+(aq)  + OH-(aq)  + H+(aq)  + Cl-(aq)  = Na+ (aq) + Cl-(aq)  + H20(l)

After canceling the spectators  ion (= ions that do not take place in a chemical equation, Na+ and Cl-)

OH–( aq) + H+( aq) → H2O( l)

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.