Q27 / 90 · JEE Main 2021 (26 Aug Shift 1) · Chemistry

The total number of negative charge in the tetrapeptide, Gly-Glu-Asp-Tyr, at $pH 12.5$ will be_______ (Integer answer)

Correct answer: 4

Solution

All acidic groups loose a proton to form negative charge at pH = 12.5.

Hence, the correct answer is 4.

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