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Amino Acids

If Ka1 and Ka...

Question

If $K_{a 1}$ and $K_{a 2}$ are the ionization constants of $H_{3} N^{+} C H I C O O H$ and $H_{3} N^{+} C H I C O O^{-},$ respectively, the pH of the solution at the isoelectric point is

A

p H = p K_{a 1} + p K_{a 2}

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B

p H = (p K_{a 1} + p K_{a 2})^{1 / 2}

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C

p H = (p K_{a 1} + p K_{a 2})^{1 / 2}

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D

p H = \frac{(p K_{a 1} + p K_{a 2})}{2}

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Solution

The correct option is D $p H = \frac{(p K_{a 1} + p K_{a 2})}{2}$
At isoelectronic point.
$p H = \frac{p K_{a 1} + p K_{a 2}}{2}$

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Similar questions

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

K_{a 1}

K_{a 2}

are the ionization constants of

H_{3} + N C H R C O O H

H_{3} + N C H R C O O^{-}

, respectively, the

p H

of the solution at the isoelectric point is:

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

K_{a_{3}}

be the first, second and third ionization constant of

H_{3} P O_{4}

K_{a_{1}} >> K_{a_{2}} >> K_{a_{3}}

which is/ are correct

p H

0.01 M N a H A

is calculated by ?

(K_{a_{1}} = 10^{- 6}

K_{a_{2}} = 10^{- 8}

are ionization constants of

H_{2} A)

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

K_{a_{3}}

be the first, second and third ionization constant of

H_{3} P O_{4}

K_{a_{1}} ≫ K_{a_{2}} ≫ K_{a_{3}}

, then which of the following is/are correct?

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