rank-the-following-oxyanions-in-order-of-increasing-basicity-based-on-the-acid-d

Question

Rank the following oxyanions in order of increasing basicity based on the acid-dissociation constants (K_a) given below: SeO₃^2–, AsO₄^3–, SeO₄^2–, and CrO₄^2–.

H₂SeO₃: K_a1 = 2.3×10^–3, K_a2 = 5.3×10^–9

H₃AsO₄: K_a1 = 5.6×10^–3, K_a2 = 1.0×10^–7, K_a3 = 3.0×10^–12

H₂SeO₄: K_a1 = very large, K_a2 = 2.2×10^–2

H₂CrO₄: K_a1 = 1.8×10^–1, K_a2 = 3.0×10^–7

Accepted Answer

SeO₄^2– < CrO₄^2– < SeO₃^2– < AsO₄^3–

Answer

SeO₄^2– < SeO₃^2– < CrO₄^2– < AsO₄^3–

Answer

SeO₄^2– < AsO₄^3– < SeO₃^2– < CrO₄^2–

Answer

AsO₄^3– < SeO₄^2– < SeO₃^2– < CrO₄^2–

Answer

AsO₄^3– < SeO₃^2– < SeO₄^2– < CrO₄^2–

My Courses

Chemistry

Biology

Math

Physics

Business

Social Sciences

Programming

Product & Marketing