Question

Study the following table and select the correct option:

• A. NaCl from HCl (strong acid) and NaOH (strong base) → Neutral, not basic
• B. Na$_2$CO$_3$ from weak acid (H$_2$CO$_3$) and strong base → Basic, not
• C. Na$_2$SO$_4$ from strong acid and strong base → Neutral, not acidic
• D. CH$_3$COONa from weak acid (CH$_3$COOH) and strong base (NaOH) → Basic

Hint:

Weak acid + Strong base → Basic salt (e.g., CH$_3$COONa).

Answer 1

The Correct Option is D

Concept: The nature of a salt depends on the strength of the acid and base from which it is formed.

• Strong acid + Strong base → Neutral salt
• Strong acid + Weak base → Acidic salt
• Weak acid + Strong base → Basic salt

Analysis of Options:

• (A) NaCl from HCl (strong acid) and NaOH (strong base) → Neutral, not basic ❌
• (B) Na$_2$CO$_3$ from weak acid (H$_2$CO$_3$) and strong base → Basic, not neutral ❌
• (C) Na$_2$SO$_4$ from strong acid and strong base → Neutral, not acidic ❌
• (D) CH$_3$COONa from weak acid (CH$_3$COOH) and strong base (NaOH) → Basic ✔

Conclusion: Sodium acetate (CH$_3$COONa) is formed from a weak acid and a strong base, making it a basic salt.