NEETChemistryIonic Equilibrium
What is the pK a value for acetic acid, and what pH is expected for a buffer solution formed by equal molar concentrations of acetic acid and sodium acetate?
Options
- ApK a = 4.76, pH ≈ 4.76
- BpK a = 7.00, pH ≈ 7.00
- CpK a = 9.25, pH ≈ 9.25
- DpK a = 3.00, pH ≈ 3.00
Correct answer
A. pK a = 4.76, pH ≈ 4.76
Step-by-step solution
The pK a value for acetic acid is 4.76, and the pH of a buffer solution formed by equal molar concentrations of acetic acid and sodium acetate will be around 4.76.