Question

what is the complete ionic equation for naoh(aq) + hcl(aq) → h₂o(l) + nacl(aq)?
a. na⁺ + oh⁻ + h⁺ + cl⁻ → h₂o + na⁺ + cl⁻
b. oh⁻ + h⁺ → h₂o
c. na⁺ + oh⁻ + h⁺ + cl⁻ → h⁺ + oh⁻ + na⁺ + cl⁻
d. na⁺ + cl⁻ → nacl

Explanation:

Step1: Identify strong electrolytes

Strong electrolytes in aqueous solution dissociate completely. NaOH, HCl, and NaCl are strong - electrolytes. NaOH dissociates into Na⁺ and OH⁻, HCl dissociates into H⁺ and Cl⁻, and NaCl dissociates into Na⁺ and Cl⁻. Water is a weak - electrolyte and does not dissociate significantly.
NaOH(aq) = Na⁺(aq)+OH⁻(aq)
HCl(aq)=H⁺(aq)+Cl⁻(aq)
NaCl(aq)=Na⁺(aq)+Cl⁻(aq)

Step2: Write the complete ionic equation

Substitute the dissociated forms into the original equation:
Na⁺(aq)+OH⁻(aq)+H⁺(aq)+Cl⁻(aq)→H₂O(l)+Na⁺(aq)+Cl⁻(aq)

Answer:

A. Na⁺ + OH⁻ + H⁺ + Cl⁻ → H₂O + Na⁺ + Cl⁻