Maharashtra Board Solutions for Chapter: Chemical Reactions and Equations, Exercise 8: Can you tell?

Some more examples of redox reaction are as follows. Identify the reductants and oxidants from them.

$2{\mathrm{H}}_2\mathrm{S} + {\mathrm{SO}}_2 \to 3\mathrm{S}\downarrow + 2{\mathrm{H}}_2\mathrm{O}$

${\mathrm{MnO}}_2 + 4 \mathrm{HCl} \to {\mathrm{MnCl}}_2 + 2{\mathrm{H}}_2\mathrm{O} + {\mathrm{Cl}}_{2 }\uparrow$

If oxidation means losing electrons, what is meant by reduction?

Write the reaction of formation of ${\mathrm{Fe}}^{2+}$ by reduction ${\mathrm{Fe}}^{3+}$ by making use of the symbol (${\mathrm{e}}^{-}$ ).