What is the conjugate acid for NH2- ?
N3-
NH2-
NH4+
H+
I thought it was NH4+ but it was wrong. Isn't it suppose to be NH3+ but they don't have on this choices.
It should be NH3.
To determine the conjugate acid of NH2-, we need to add a proton (H+).
NH2- + H+ -> NH3
So, the conjugate acid of NH2- is NH3.
Regarding the options provided, NH4+ is not the correct conjugate acid of NH2-. NH4+ is the conjugate acid of NH3.
To find the conjugate acid for NH2-, you need to understand acid-base reactions. An acid donates a proton (H+) to a base, which accepts the proton. In this case, NH2- is acting as a base, so its conjugate acid will be the species formed when it accepts a proton.
NH2- is the conjugate base of the ammonia molecule (NH3). When NH3 accepts a proton, it forms NH4+. So, the correct conjugate acid for NH2- is NH4+.
In the given choices, NH4+ is indeed the correct answer. However, the option NH3+ is not listed as a choice. This may be because NH3+ is an incorrect representation of a species. NH3 is a neutral molecule and cannot exist with a positive charge. The "+" sign represents a positive charge on an ion and should not be used with NH3.
To solve acid-base problems, it is essential to understand the concept of acid-base reactions and the properties of conjugate acid-base pairs.