Justify that the following reaction are redox reactions:
a. `CuO(s)+H_(2)(g)rarr Cu(s)+H_(2)O(g)`
b. `Fe_(2)O_(3)(s)+3CO(g)rarr 2Fe(s)+3CO_(2)(g)`
c. `4BCl_(3)(g)+3LiAlH_(4)(s) rarr 2B_(2)H_(6)(g)+3LiCl(s)+3AlCl_(3)(s)`
d. `2K(s)+F_(2)(g)rarr 2K^(o+)F^(Θ)(s)`
e. `4NH_(3)(g)+5O_(2)(g)rarr 4NO(g)+6H_(2)O(g)`

Explanation

A chemical reaction may be reggarded as redox reactiion if one of the reacting species undergoies increases (oxidation) and the other decrease inO.N (reduction).Bases upon this, let us try to justify that the reacting study are redox reactions in nature.