Use the following table to predict the best acid / base pair for the desired pH/pOH value: pOH = 10.85 What is the best acid AND base pair? Name Acid Base pKa Hydrochloric acid HCl Cl- -7.00 Phosphoric acid H3PO4 H2PO4- 2.12 Hydrofluoric acid HF F- 3.18 Lactic acid Lactic acid Lactate 3.85 Acetic acid CH3COOH CH3COO- 4.74 Carbonic acid H2CO3 HCO3- 6.36 Dihydrogen phosphate H2PO4- HPO42- 7.21 Ammonium NH4+ NH3 9.25 Hydrocyanic acid HCN CN- 9.31 Bicarbonate HCO3- CO32- 10.25 Methylammonium ion CH3NH3+ CH3NH2 10.62 Hydrogen phosphate HPO42- PO43- 12.38
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.
Use the following table to predict the best acid / base pair for the desired pH/pOH value:
pOH = 10.85
What is the best acid AND base pair?
|
Name |
Acid |
Base |
pKa |
|
Hydrochloric acid |
HCl |
Cl- |
-7.00 |
|
Phosphoric acid |
H3PO4 |
H2PO4- |
2.12 |
|
Hydrofluoric acid |
HF |
F- |
3.18 |
|
Lactic acid |
Lactic acid |
Lactate |
3.85 |
|
Acetic acid |
CH3COOH |
CH3COO- |
4.74 |
|
Carbonic acid |
H2CO3 |
HCO3- |
6.36 |
|
Dihydrogen phosphate |
H2PO4- |
HPO42- |
7.21 |
|
Ammonium |
NH4+ |
NH3 |
9.25 |
|
Hydrocyanic acid |
HCN |
CN- |
9.31 |
|
Bicarbonate |
HCO3- |
CO32- |
10.25 |
|
Methylammonium ion |
CH3NH3+ |
CH3NH2 |
10.62 |
|
Hydrogen phosphate |
HPO42- |
PO43- |
12.38 |
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