Which of the following substances forms a neutral aqueous solution?
Answer and explanation
Correct answer: Sodium chloride
The governing concept is salt hydrolysis and the strength of the parent acid and base. Sodium chloride comes from the strong acid HCl and the strong base NaOH; neither ion hydrolyses appreciably, so its aqueous solution is generally neutral, with pH close to 7. Hydrochloric acid is acidic, sodium hydroxide is basic, and ammonium chloride is acidic because the ammonium ion hydrolyses in water.
Frequently asked questions
What is the correct answer to this question?
Sodium chloride
Why is this the correct answer?
The governing concept is salt hydrolysis and the strength of the parent acid and base. Sodium chloride comes from the strong acid HCl and the strong base NaOH; neither ion hydrolyses appreciably, so its aqueous solution is generally neutral, with pH close to 7. Hydrochloric acid is acidic, sodium hydroxide is basic, and ammonium chloride is acidic because the ammonium ion hydrolyses in water.
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.
