6 public questions tagged with this topic.
[NH₄+] = 0.01 M , pKb = 4.74 , pOH = 4.74 + log (0.01/0.05) = 4.74 - 0.7 = 4.04 , pH = 14 - 4.04 = 9.96 .
Ref: NCERT Class 11 Chemistry > Chapter 6: Equilibrium > Topic: Ionic Equilibrium - Acids Bases and pH and Ionization of Weak Acids Bases
5.76 accurately defines or describes the concept asked in this question. Within pH and Buffer, precise definitions and terminology are essential for clear scientific communication. The other options (3.76, 4.76, and 6.76) 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
Henderson-Hasselbalch equation is obtained by applying the relevant formula or quantitative relationship to the given parameters. In pH and Buffer, numerical problem-solving requires understanding the mathematical relationships between biological variables. The calculation involves substituting the provided values into the appropriate equation and solving systematically. The other options (Arrhenius equation, Van’t Hoff equation, and Raoult’s Law) result from common calculation errors such as using incorrect formulas, misidentifying variables, inverting ratios, or making arithmetic mistakes.
Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 2
pH of a solution containing a weak acid and its conjugate base is obtained by applying the relevant formula or quantitative relationship to the given parameters. In Titration of Amino Acids, numerical problem-solving requires understanding the mathematical relationships between biological variables. The calculation involves substituting the provided values into the appropriate equation and solving systematically. The other options (Net charge of a protein, Protein solubility, and The isoelectric point of an amino acid) result from common calculation errors such as using incorrect formulas, misidentifying variables, inverting ratios, or making arithmetic mistakes.
Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 3
pKa ± 1 is the scientifically accurate answer to this question. Within the study of Titration of Amino Acids, this concept is well-established through extensive research and is documented in standard scientific literature. The specific properties, mechanisms, or characteristics of pKa ± 1 directly address what is being asked. Among the other options, pI ± 1, pKa ± 2, and pI ± 2 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. 3
All of the above correctly identifies the graphical representation, mathematical relationship, or plot parameter described in this question. In Titration of Amino Acids, graphical analysis transforms complex kinetic or biological data into linear relationships that allow precise determination of key parameters. The specific feature described by All of the above is derived from the mathematical transformation of the underlying equation and has a defined physical meaning. The other options (The isoelectric point, The buffering capacity of amino acids, and The charge of amino acids at a given pH) represent different parameters, intercepts, or slopes from either the same or different analytical methods.
Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 3
