29 public questions tagged with this topic.
A Lewis acid accepts an electron pair. BF₃ has an incomplete octet and can accept an electron pair, making it a Lewis acid.
Ref: NCERT Class 11 Chemistry > Chapter 6: Equilibrium > Topic: Relationship Between Kp Kc and Factors Affecting Equilibrium - Le Chatelier
A Lewis base donates an electron pair. CN- has a lone pair on carbon or nitrogen, making it a Lewis base.
Ref: NCERT Class 11 Chemistry > Chapter 6: Equilibrium > Topic: Physical Equilibrium - Solid-Liquid Gas-Liquid and Henry's Law
H₂O can accept an electron pair (Lewis acid) or donate a lone pair (Lewis base), making it amphoteric.
Ref: NCERT Class 11 Chemistry > Chapter 6: Equilibrium > Topic: Ionic Equilibrium - Acids Bases and pH and Ionization of Weak Acids Bases
The conjugate acid of CO₃²⁻ is formed by accepting a proton ( H+ ), resulting in HCO₃- .
Ref: NCERT Class 11 Chemistry > Chapter 6: Equilibrium > Topic: Chemical Equilibrium - Law of Mass Action and Equilibrium Constant
HSO₄- loses a proton ( H+ ) to form SO₄²⁻ , its conjugate base.
Ref: NCERT Class 11 Chemistry > Chapter 6: Equilibrium > Topic: Acid-Base Theories - Arrhenius Bronsted-Lowry Lewis and Salts Hydrolysis
pH + pOH = 14 accurately defines or describes the concept asked in this question. Within Acid, Base, pH, precise definitions and terminology are essential for clear scientific communication. The other options (pH = 14 × pOH, pH + pOH = 7, and pH = 10â»â· × pOH) either describe related but distinct concepts, use incorrect terminology, or confuse similar-sounding terms that have different scientific meanings. A thorough understanding of exact definitions helps distinguish between closely related biological concepts and is crucial for competitive examinations.
Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 2
pH = -log[Hâº] accurately defines or describes the concept asked in this question. Within Acid, Base, pH, precise definitions and terminology are essential for clear scientific communication. The other options (pH = log[Hâº], pH = log[OHâ»], and pH = -log[OHâ»]) either describe related but distinct concepts, use incorrect terminology, or confuse similar-sounding terms that have different scientific meanings. A thorough understanding of exact definitions helps distinguish between closely related biological concepts and is crucial for competitive examinations.
Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 2
1 × 10â»Â¹â´ is the scientifically accurate answer to this question. Within the study of Acid, Base, pH, this concept is well-established through extensive research and is documented in standard scientific literature. The specific properties, mechanisms, or characteristics of 1 × 10â»Â¹â´ directly address what is being asked. Among the other options, 1 × 10â»â´, 1 × 10â»â·, and 1 × 10â»Â¹â° do not correctly answer this question because they either refer to different concepts, describe properties of other molecules or processes, or represent common misconceptions about this topic.
Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 2
7 accurately defines or describes the concept asked in this question. Within Acid, Base, pH, precise definitions and terminology are essential for clear scientific communication. The other options (6, 8, and 9) either describe related but distinct concepts, use incorrect terminology, or confuse similar-sounding terms that have different scientific meanings. A thorough understanding of exact definitions helps distinguish between closely related biological concepts and is crucial for competitive examinations.
Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 2
CH₃COOH and CH₃COOâ»Na is the scientifically accurate answer to this question. Within the study of Acid, Base, pH, this concept is well-established through extensive research and is documented in standard scientific literature. The specific properties, mechanisms, or characteristics of CH₃COOH and CH₃COOâ»Na directly address what is being asked. Among the other options, HCl and NaCl, NaOH and NaCl, and Hâ‚‚SOâ‚„ and HSOâ‚„â» do not correctly answer this question because they either refer to different concepts, describe properties of other molecules or processes, or represent common misconceptions about this topic.
Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 2
Hâ‚‚O is the accurate classification or categorization for the organism, molecule, or concept described in this question. In Acid, Base, pH, proper classification is based on shared characteristics including morphological, biochemical, genetic, and evolutionary criteria. Hâ‚‚O meets the specific diagnostic features and defining criteria that distinguish it from related groups. The other options (NH₃, OHâ», and HCl) belong to different taxonomic groups, represent different classification levels, or possess distinct characteristics that exclude them from this category.
Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 2
It resists changes in pH when small amounts of acid or base are added is the scientifically accurate answer to this question. Within the study of Acid, Base, pH, this concept is well-established through extensive research and is documented in standard scientific literature. The specific properties, mechanisms, or characteristics of It resists changes in pH when small amounts of acid or base are added directly address what is being asked. Among the other options, It neutralizes only acids, It neutralizes only bases, and It contains only weak acids do not correctly answer this question because they either refer to different concepts, describe properties of other molecules or processes, or represent common misconceptions about this topic.
Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 2
