MCQ
Which of the following equation is incorrect written?
- A$P_4 + 20HNO_3 \to 4H_3PO_4 + 20NO_2 + 4H_2O$
- ✓$I_2 + 10HNO_3 \to 2HIO_4 + 10NO_2 + 4H_2O$
- C$S+6HNO_3 \to H_2SO_4 +6NO_2 +2H_2O$
- DNone of the above
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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 $\left|z_1\right|+\left|z_2\right|+\left|z_3\right|$ ?