MCQ
The charge over anode in a galvanic cell is
- ✓Negative
- BPositive
- CNo charge
- DSometimes negative and sometimes positive
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If the absolute values of the net charge of the peptide at $pH =2, pH =6$, and $pH =11$ are $\left| z _1\right|,\left| z _2\right|$ and $\left|z_3\right|$, respectively, then what is $\left|z_1\right|+\left|z_2\right|+\left|z_3\right|$ ?

