Which of the following will determine the pH of a buffer made using acetic acid and sodium acetate? A) the amount of water present B) the [C₂H₃O₂-] C) the [HC₂H₃O₂] D) the ratio [C2H3O2^-]/[HC2H3O2]

Question

Quizplus · Accepted Answer

The pH of a buffer made using acetic acid and sodium acetate is determined by the ratio of the concentrations of the conjugate base (C2H3O2-) and the weak acid (HC2H3O2). This is represented by the expression [C2H3O2-]/[HC2H3O2]. This ratio is equivalent to the expression [CS-]/[HS], where CS- is the concentration of the conjugate base (sodium acetate) and HS is the concentration of the weak acid (acetic acid). Therefore, the best choice is D, which represents the ratio [C2H3O2-]/[HC2H3O2]. The other options (A, B, and C) are not relevant to determining the pH of a buffer made using acetic acid and sodium acetate.

Which of the Following Will Determine the PH of a Buffer