Select the best conjugate acid–base pair for a buffer solution at pH 12.01. acid conjugate base pKa CH3CO2H CH3CO2- 4.75 H2PO4- HPO42- 7.21 NH4+ NH3 9.25 HCO3– CO32- 10.33 HPO42- PO43- 12.32 Question options: H2PO4-, HPO42- NH4+, NH3 CH3CO2H, CH3CO2- HPO42-, PO43-
Ionic Equilibrium
Chemical equilibrium and ionic equilibrium are two major concepts in chemistry. Ionic equilibrium deals with the equilibrium involved in an ionization process while chemical equilibrium deals with the equilibrium during a chemical change. Ionic equilibrium is established between the ions and unionized species in a system. Understanding the concept of ionic equilibrium is very important to answer the questions related to certain chemical reactions in chemistry.
Arrhenius Acid
Arrhenius acid act as a good electrolyte as it dissociates to its respective ions in the aqueous solutions. Keeping it similar to the general acid properties, Arrhenius acid also neutralizes bases and turns litmus paper into red.
Bronsted Lowry Base In Inorganic Chemistry
Bronsted-Lowry base in inorganic chemistry is any chemical substance that can accept a proton from the other chemical substance it is reacting with.
Select the best conjugate acid–base pair for a buffer solution at pH 12.01.
|
acid |
conjugate base |
pKa |
|
CH3CO2H |
CH3CO2- |
4.75 |
|
H2PO4- |
HPO42- |
7.21 |
|
NH4+ |
NH3 |
9.25 |
|
HCO3– |
CO32- |
10.33 |
|
HPO42- |
PO43- |
12.32 |
Question options:
|
|
H2PO4-, HPO42- |
|
|
NH4+, NH3 |
|
|
CH3CO2H, CH3CO2- |
|
|
HPO42-, PO43- |
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