Question

23. Acid Structure 0 HNO 4.0 x104 CH 1.3 x10-5 Cl HCIO 3.0 x 103 0 HoCH 1.6 x10-10 The table above shows the values of Ka for four weak acids. Which of the following pairs of chemical species, when combined in equimolar amounts, results in a buffer with a pH closest to 4.8? (A) HNO2 and OH- (B) HC3HsO2 and C3HsO2 (C) HCIO and CIO (D) C6HsOH and C6HsO

Answer 1

5 0 0 L8 尸