The structure of a peptide is given below: If the absolute values of the net charge of the peptide at pH =2, pH =6, and pH =11 are | z 1|,| z 2|, and | z 3|, respectively, then what is |z1|+|z2|+|z3| ?

Question

The structure of a peptide is given below: <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/chemistry/281ffe2c881aea318e0dfc887d1ee35c-.png" /> If the absolute values of the net charge of the peptide at pH =2, pH =6, and pH =11 are | z 1|,| z 2|, and | z 3|, respectively, then what is |z1|+|z2|+|z3| ? (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

At pH = 2 (highly acidic), the structure of the peptide will be as shown below.

So, |Z1| = 2 At pH = 6 it will exist as neutral or zwitter-ion structure as shown below.

So, according to this condition, |Z2| = 0 At pH = 11 (highly basic), the given peptide will exist as:

So, |Z3|=|-3|=3 |Z1|+|Z2|+|Z3| =2+0+3=5

Q. The structure of a peptide is given below: If the absolute values of the net charge of the peptide at pH=2,pH=6, and pH=11 are ∣z1​∣,∣z2​∣, and ∣z3​∣, respectively, then what is ∣z1​∣+∣z2​∣+∣z3​∣ ?

Q. The structure of a peptide is given below:

If the absolute values of the net charge of the peptide at $p H = 2, p H = 6$ , and $p H = 11$ are $∣ z_{1} ∣, ∣ z_{2} ∣$ , and $∣ z_{3} ∣$ , respectively, then what is $∣ z_{1} ∣ + ∣ z_{2} ∣ + ∣ z_{3} ∣$ ?