Consider the Reaction
CO₃^2-(aq)+ H₂O(l) HCO₃^-(aq)+ OH^-(aq) $\times$ 10^-4 at 25°C

question 27

Multiple Choice

Consider the reaction
CO₃^2-(aq) + H₂O(l) HCO₃^-(aq) + OH^-(aq) .K_b for CO₃^2- is 2.1 $\times$ 10^-4 at 25°C.
What is K_a for the HCO₃^- ion at 25°C?

• A) 4.8 \(\times\) 10³
• B) 4.8 \(\times\) 10^-11
• C) 2.1 \(\times\) 10^-4
• D) 7.2 \(\times\) 10^-12
• E) 9.2 \(\times\) 10^-8

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