# chemistry

posted by .

What is the pH of a buffer solution made from 0.20M HC2H3O2 abd 0.5M C2H302^-.The ionization constant of the acid (Ka)(HC2H3O2)is 1.8multiplied by 10^-5.
(ii)Calculate the ionization constant of its conjugate base

• chemistry -

Use the Henderson-Hasselbalch equation to solve part 1.
For part 2, the conjugate base (we'll call the molarity M) is
............A^- + HOH ==> HA + OH^-
initial.....M..............0.....0
change......-x.............x.....x
equil......M-x.............x.....x

Kb for the A^- base = (Kw/Ka for the HA).

## Similar Questions

1. ### Stupid Chemistry

Ok, blonde moment here, Kb is the same as Ka but just for bases and Ka is for acids correct?
2. ### Chemistry

my ap chem teacher has been absent for the past two weeks and part of the notes her sub gave us to copy says that In the equation HC2H3O2 + H20 <--> C2H3O2(- charge) + H3O(+ charge) HC2H3O2 is an acid H2O is a base C2H3O2(- charge) …
3. ### chemistry

For a week acid whose ionization constant is 1.75 x 10(-5), the pH of its solution is 3.0. Determine its degree of ionization and its percent ionization.
4. ### chemistry

calculate the pH of a buffer solution containing 0.200M acetic acid, HC2H3O2, plus 0.150M sodium acetate. The dissociation constant for HC2H3O2 is 1.76 x 10-5 I don't think our instructor gave enough notes on these things Im kind of …
5. ### chemistry

calculate the ionisation constant of the conjugate base of a solution made from 0.20M HC2H3O2 AND 0.50M C2H302.
6. ### CHEMISTRY

calculate the ionization constant of the conjugate base for a solution made from 0.2Molar HC2H3O2 and 0.5Molar C2H3O2.The ionization constant for the acid (HC2H3O2) IS 1.8 Multiplied by 10^(-5)
7. ### chemistry

how do you write the ionization reaction and the acid ionization constant expression for the third ionization of phosphoric acid in water?
8. ### Chemistry 2 Lab

Calculate the degree of ionization of acetic acid in solution 1 through 3?
9. ### chemistry

â€¢Which of the following solutions will be the best buffer at a pH of 9.26?
10. ### Chem

What simplifying assumptions do we usually make in working problems involving equilibria of salts of polyprotic acids?

More Similar Questions