Acid Base Calculator
Calculate pH, pOH, H+ and OH- concentrations for strong and weak acids and bases.
Acid/Base Parameters
Solution Type:
Strength:
0.1 M
0 M1 M
M
pH Value
1.0000
Solution is: Acidic
pOH
13.0000
[H+] Concentration
1.0000e-1 M
[OH-] Concentration
1.0000e-13 M
% Dissociation
100.00%
Formula Used:
pH = -log[H+], where [H+] = C
Understanding Acids and Bases
Acids are substances that donate hydrogen ions (H+) in solution, while bases accept hydrogen ions or donate hydroxide ions (OH-). Strong acids/bases completely dissociate in water, while weak acids/bases only partially dissociate. The pH scale runs from 0 to 14, with 7 being neutral. Values below 7 are acidic, and values above 7 are basic.
Common Acids and Bases
Strong Acids
HCl, HNO3, H2SO4, HBr, HI, HClO4
Strong Bases
NaOH, KOH, Ca(OH)2, Ba(OH)2
Weak Acids
CH3COOH, H2CO3, H3PO4, HF
Weak Bases
NH3, CH3NH2, C5H5N (pyridine)