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What Is the Hydroxide-Ion Concentration at Equilibrium in a 0

Question 142

Multiple Choice

What is the hydroxide-ion concentration at equilibrium in a 0.66 M solution of ethylamine (C₂H₅NH₂,K_b = 4.7 × 10^-4) at 25^oC?

A) 1.7 × 10^-2 M
B) 2.7 × 10^-2 M
C) 1.5 × 10^-14 M
D) 5.8 × 10^-13 M
E) 6.6 × 10^-1 M

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