What Is the Selenide Ion Concentration [Se^2-] for a 0

question 23

Multiple Choice

What is the selenide ion concentration [Se^2-] for a 0.100 mol L^-1 H₂Se solution that has the stepwise dissociation constants of K_a1 = 1.3 × 10^-4 and K_a2 = 1.0 × 10^-11?

• A)3.6 × 10^-3 mol L^-1
• B)1.3 × 10^-4 mol L^-1
• C)1.3 × 10^-5 mol L^-1
• D)1.0 × 10^-11 mol L^-1

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