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pH of Weak Bases

17. Acid and Base Equilibrium / pH of Weak Bases / Problem 5

What is the K_b for a 0.200 M solution of CH₃NH₂ with a pH of 11.961?

A

4.38x10^-4

B

5.60x10^-4

C

1.30x10^-3

D

4.00x10^-4

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