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Conductivity MP BP and Electronegativity (Group 2)

Consider the ...

Question

Consider the following ionic equilibrium
Given $p K_{a 1} = 2.3 and p K_{a 2} = 9.7$

Then what is the isoelectric point of alanine?

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Solution

$P I = \frac{p K a_{1} + p K a_{2}}{2} = \frac{2.3 + 9.7}{2} = 6$

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Similar questions

Q. Consider the following ionic equilibrium
Given

p K_{a 1} = 2.3 and p K_{a 2} = 9.7

Then what is the isoelectric point of alanine?

Q. Consider the following ionic equilibrium
Given

p K_{a 1} = 2.3 and p K_{a 2} = 9.7

Then what is the isoelectric point of alanine?

Q. The structure of a basic amino acid, lysine, is given. The

p K_{a_{1}}, p K_{a_{2}}

p K_{a_{3}}

(A)

2.18, 8.95

10.53

p H

at isoelectric points

(p I)

?

K_{a 1}

K_{a 2}

are the ionization constants of

H_{3} N^{+} C H I C O O H

H_{3} N^{+} C H I C O O^{-},

respectively, the pH of the solution at the isoelectric point is

⎛ ⎜ ⎜ ⎝ H O O C - C | H^{\oplus} N H_{3} - C H_{2} C O O H ⎞ ⎟ ⎟ ⎠

The structure of aspartic acid is given.The

p K_{a_{1}}, p K_{a_{2}}

p K_{a_{3}}

(A)

respectively are:

1.88, 3.65

9.60

p K_{a_{1}}

corresponds to the ionisation of the

C O O H

⎛ ⎜ ⎜ ⎜ ⎜ ⎝ R \oplus N H_{3} | C H - C O O H ⎞ ⎟ ⎟ ⎟ ⎟ ⎠

p K_{a_{2}}

corresponds to the ionisation of

(\oplus N H_{3})

(ammonium ion). What is the

p H

at isoelectric points

(p I)

?

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