Given the reactions: 1) HF ⇔ H⁺ + F⁻
2) 2HF + C₂O₄²⁻ ⇔ 2F⁻ + H₂C₂O₄
Determine the value of the equilibrium constant for the reaction:
3) H₂C₂O₄ ⇔ 2H⁺ + C₂O₄²⁻

Using the periodic table, complete the table to describe each atom. type in your answers

Answer asap need to be answered by wednesday morning explain how a buffer works, using an ethanoic acid / sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.

You wish to prepare a buffer consisting of acetic acid and sodium acetate with a total acetic acetate plus acetate concentration of 250 mm and a ph of 5. what concentrations of acetic acid and sodium acetate should you use