Why is an aqueous solution of sodium chloride generally neutral?
Answer and explanation
Correct answer: It is formed from a strong acid and a strong base
The governing concept is the nature of salts formed by neutralisation. Sodium chloride can be obtained from hydrochloric acid and sodium hydroxide: HCl + NaOH → NaCl + H₂O. Both parent substances are strong, and Na⁺ and Cl⁻ do not significantly hydrolyse water, so the aqueous solution is generally near neutral. Thus option A is correct; the other descriptions do not explain its pH.
Frequently asked questions
What is the correct answer to this question?
It is formed from a strong acid and a strong base
Why is this the correct answer?
The governing concept is the nature of salts formed by neutralisation. Sodium chloride can be obtained from hydrochloric acid and sodium hydroxide: HCl + NaOH → NaCl + H₂O. Both parent substances are strong, and Na⁺ and Cl⁻ do not significantly hydrolyse water, so the aqueous solution is generally near neutral. Thus option A is correct; the other descriptions do not explain its pH.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
