Chemistry - Redox Reactions Question with Solution | TestHub

I) $\mathrm{Mg}+2{\mathrm{HNO}}_3(5\%)\to \mathrm{Mg}{\left({\mathrm{NO}}_3\right)}_2+{\mathrm{H}}_2$ (very dilute) (P)

II)

$$\mathrm{Cu}+8{\mathrm{HNO}}_3\to 3\mathrm{Cu}{\left({\mathrm{NO}}_3\right)}_2+2\mathrm{NO}+4{\mathrm{H}}_2\mathrm{O}$$

(dil.) (Q)

III)

$${\mathrm{I}}_2+10{\mathrm{HNO}}_3\to 2{\mathrm{HIO}}_3+10{\mathrm{NO}}_2+4{\mathrm{H}}_2\mathrm{O}$$

(R)

Here $\mathrm{x}=2,\mathrm{y}=8$ and $\mathrm{z}=10$

Hence, $x+y+z=2+8+10=20$