Ionic equilibrium. Lec.10. Recall. Where : C =1/V. weak electrolyte. Very weak electrolyte. Degree of Ionization. The Ion Product of Water. ( Very weak electrolyte ). The Hydrogen Ion Exponent:( pH).
Where : C =1/V
Very weak electrolyte
Degree of Ionization
The Ion Product of Water
( Very weak electrolyte)
What is the pH value of:
The ionization constant of acetic acid at 25 0C is 1.82x10-5.
Calculate the pH of 0.1 mole/ L acid.
Another method of calculating [H+]: According to Ostwald’s dilution law,
pH= -log [H+]= 2.87
( including both dissociated and un dissociated molecules)
The equivalent conductance of acetic acid at infinite dilution is 387 cm3 atm-1 mole-1 at the same temperature but at the dilution of 1 mole in 1000 liters, the equivalent conductance is 55cm3 atm-1 mole-1. Find the percentage ionization of 0.1 mole/L acetic acid solution.
If the pH value of 0.1 mole/L acetic acid is 2.872,
calculate the ionization constant of the acid.
pH= -log [H+]
2.872 = -log [H+]