NCERT Exemplar Solutions
Class 10 - Science - CHAPTER 2: Acids, Bases and Salts - Short Answer QuestionsQuestion 41
Class 10 - Science - CHAPTER 2: Acids, Bases and Salts - Short Answer Questions
Question. 41
41. What are strong and weak acids? In the following list of acids, separate strong acids from weak acids.
Hydrochloric acid, citric acid, acetic acid, nitric acid, formic acid, sulphuric acid.
Answer:
Strong acids: Hydrochloric acid (HCl), Sulphuric acid (H₂SO₄), Nitric acid (HNO₃).
Weak acids: Citric acid, Acetic acid (CH₃COOH), Formic acid (HCOOH).
Weak acids: Citric acid, Acetic acid (CH₃COOH), Formic acid (HCOOH).
Detailed Answer with Explanation:
Steps: Strong acids ionise completely in aqueous solution (provide high [H₃O⁺]); weak acids ionise partially and give lower [H₃O⁺].