What is the pH of 0.01 M glycine solution? For glycine, Ka₁ = 4.5 ˣ 10⁻³

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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:

1. Alkyl halides with metallic sodium in dry ether producing
2. Chlorine is in +1 oxidation state in which of the following
3. Sodium Hydroxide reacts with Zinc to form
4. Which of the following amino acids is basic in nature
5. For alkali metals, which one of the following trends is incorrect

Topics: Equilibrium (104)
Subject: Chemistry (2512)

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