Question

As per Bronsted-Lowry concept, acid is defined as:

• A. Electron pair acceptor
• B. Any substance/molecule that can accept a proton
• C. Any substance/molecule that can donate a proton
• D. Electron pair donor

Hint:

In the Bronsted-Lowry theory, acids donate protons (H\(^+\)), while bases accept protons. This theory explains acid-base reactions in aqueous and non-aqueous systems.

Answer 1

The Correct Option is C

Step 1: Understanding the Bronsted-Lowry concept. The Bronsted-Lowry theory defines acids and bases based on proton (H\(^+\)) transfer: - Acid: A substance that donates a proton (H\(^+\)) in a reaction. - Base: A substance that accepts a proton (H\(^+\)). 

Step 2: Explanation of correct answer. According to the Bronsted-Lowry concept, an acid is any molecule or ion that donates a proton (H\(^+\)), which makes option (C) correct. 

Step 3: Why other options are incorrect. - (A) Electron pair acceptor: This definition aligns with Lewis acids, not Bronsted-Lowry acids. 
- (B) Any substance/molecule that can accept a proton: This defines a Bronsted-Lowry base, not an acid. 
- (D) Electron pair donor: This describes Lewis bases, not acids.