Aniline, C6 H5 NH₂ , is commonly used as a precursor for making dyes. Aniline is a base when dissolved in water. It ionizes as shown below. What is the base ionization constant, K b , of aniline if an aqueous 0.20 M C6 H5 NH₂ solution has a pOH value equal tO5 .05?
C6 H5 NH₂ + H₂ O
C6 H5 NH₃+ + OH -
A) K b = 6.3×10 - 18
B) K b = 4.0×10 - 10
C) K b = 4.5×10 - 5
D) K b = 1.5×10 - 2
E) K b = 6.3×1010
Correct Answer:
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