The pH of the solution obtained by dissolving pure sodium chloride in water in

When pure sodium chloride (NaCl) is dissolved in water, the resulting solution is neutral. This is because NaCl is a salt derived from the neutralization of a strong acid (hydrochloric acid, HCl) and a strong base (sodium hydroxide, NaOH) [1]. In aqueous solution, NaCl dissociates completely into sodium (Na+) and chloride (Cl-) ions. These ions are conjugate partners of a strong base and a strong acid, respectively, and possess negligible strength; therefore, they do not undergo hydrolysis or react with water to produce an excess of hydrogen (H+) or hydroxide (OH-) ions. Consequently, the concentration of hydronium and hydroxide ions remains balanced, maintaining a pH of approximately 7 at 25°C [1]. Since the ions do not affect the acidity or alkalinity, the solution is classified as neutral [1].

Sources

1. [1] Science , class X (NCERT 2025 ed.) > Chapter 2: Acids, Bases and Salts > Activity 2.14 > p. 29