Question

What is this equation an example of: `Zn + 2HCl -> ZnCl_2 + H_2`?

Answer 1

This is a redox reaction..........

Explanation:

Zinc metal is oxidized up to `Zn^(2+)`...........

`ZnrarrZn^(2+) + 2e^-` `(i.)`

Hydrogen chloride is reduced to dihydrogen..........

`2HCl(aq) +2e^(-) rarr H_2(g)uarr + 2Cl^(-)` `(ii.)`

And `(i) + (ii)` gives................

`Zn(s) + 2HCl(aq) rarr H_2(g) + ZnCl_2(aq)`