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What is the pH of 0.01 M glycine solution? For glycine, Ka₁ = 4.5 ˣ 10⁻³ and Ka₂ =1.7 ˣ 10⁻¹⁰ at 298 K
Options
(a) 3
(b) 10
(c) 6.1
(d) 7.2
Correct Answer:
6.1
Explanation:
K = Kₐ₁ x Kₐ₂ = 4.5 x 10⁻³ * 1.7 x 10⁻¹⁰,
7.65 x 10⁻¹³,
[H⁺] = √KC = √7.65 x 10⁻¹³ x 0.01 ,
= √7.65 x 10⁻¹⁵
= 0.87 x 10⁻⁷. pH = -log 0.87 x 10⁻⁷
= 7 – 0.93 = 6.07.
Related Questions: - Which of the following statements is correct
- Standard enthalpy and standard entropy changes for the oxidation of ammonia
- The Formation of the oxide ion, O²⁻ from oxygen atom requires first an exothermic
- The species Ar,K⁺ and Ca²⁺ contain the same number of electrons.
- The oxidation numbers of hydrogen in KH,MgH₂ and NaH are respectively
Topics: Equilibrium
(104)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which of the following statements is correct
- Standard enthalpy and standard entropy changes for the oxidation of ammonia
- The Formation of the oxide ion, O²⁻ from oxygen atom requires first an exothermic
- The species Ar,K⁺ and Ca²⁺ contain the same number of electrons.
- The oxidation numbers of hydrogen in KH,MgH₂ and NaH are respectively
Topics: Equilibrium (104)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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