h+ + nh3= nh4+ ,,in this reaction nh3 act as
Answers
According to me... This is not a redox reaction... It is a reduction reaction only. Here nh3 is getting reduced... Maybe??
Answer:
If you are referring to this reaction whether it is redox or non redox, it is non redox. Therefore, NH3 acts neither as a reducing , nor as an oxidizing agent.
Explanation:
We know redox reactions involve the transfer of electrons (one substance gives, the other takes). If you get confused with this and can't decide who gives the electrons and who takes them, or whether there is a transfer of electrons at all, you can work with oxidation numbers . It is redox , oxidation numbers of reactants change.
- NH3 - oxidation number of N is -3 ( it is always -3 when it is bonded to H). Oxidation numer of H is +1 . THeir sum: -3 + 3(+1) = 0.
- H+ - oxidation number of this ion is +1 (it is an ion, not an element, it has a charge)
- NH4+ - oxidation number of N is still -3, the oxidation number of H is still +1 , none changed. The sum of the oxidaton numbers : -3 + 4(+1) = +1. ANd this is correct considering the rule : the oxidation number of polyatomic ions matches with their charge (charge was 1+ , oxidation number was +1) .
Overall, this reaction is not redox. NH3 doesn't act as a reducing agent, neither as an oxidizing agent.
NH4+ is formed by a coordinate covalent bond : the H+ ion will bond with the lone pair of N in the NH3 molecule, creating a coordinate bond , and the + charge will move somewhere else in the molecule (the molecule gets a positive 1+ charge).
The picture attached demonstrates how NH4+ is formed.
