9. If only 0.9% of 0.50 M solution of a weak base was ionized. Calculate its...

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9. If only 0.9% of 0.50 M solution of a weak base was ionized. Calculate its Kb value? * (3.5 Points) O 1.3 x 10-3 O 1.6 x 10-4 5.2 x 10-5 O 4.1 x 10-5 O 2.7 x 10-4 9. If only 0.9% of 0.50 M solution of a weak base was ionized. Calculate its Kb value? * (3.5 Points) O 1.3 x 10-3 O 1.6 x 10-4 5.2 x 10-5 O 4.1 x 10-5 O 2.7 x 10-4