Consider the titration of 200.0 mL of a 0.100 M solution of the weak acid H₂A with 0.200 M NaOH. The first equivalence point is reached after 100.0 mL of 0.200 M NaOH has been added, and the pH is 6.27. The pH after 65.0 mL of 0.200 M NaOH has been added, the pH is 4.95.Calculate the value of K_a2 for H₂A. A) 5.37 × 10^-7 B) 2.10 × 10^-5 C) 1.12 × 10^-5 D) 1.40 × 10^-8 E) none of these

Question

Quizplus · Accepted Answer

The Answer of Consider the titration of 200.0 mL of a 0.100 M solution of the weak acid H₂A with 0.200 M NaOH. The first equivalence point is reached after 100.0 mL of 0.200 M NaOH has been added, and the pH is 6.27. The pH after 65.0 mL of 0.200 M NaOH has been added, the pH is 4.95.Calculate the value of K_a2 for H₂A. A) 5.37 × 10^-7 B) 2.10 × 10^-5 C) 1.12 × 10^-5 D) 1.40 × 10^-8 E) none of these

Consider the Titration of 200