Using Argn (n = - 2, - 1, 0, + 1, + 2, etc.) to represent the different charge species of Arginine, what is the dominant species of Arginine at pH 2.7? That is, which one has the highest concentration?

Question

Chemistry

Jerimiah Dougherty

10 September, 13:15

Using Argn (n = - 2, - 1, 0, + 1, + 2, etc.) to represent the different charge species of Arginine, what is the dominant species of Arginine at pH 2.7? That is, which one has the highest concentration?

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Answers (1)

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Kelvin Ray · Answer 1

From the sorensen equation; pH = - Log[H+]

2.7 = - Log[H+]

H + = 10^-2.7

H + = 0.001995M = Hydrogen ion concentration

Basically, the more the charges, the higher the hydrogen ion concentration stand vice versa. + 2 has the highest concentration.