A) \[3.5\times {{10}^{-4}}\]
B) \[1.0\times {{10}^{-7}}\]
C) \[2.85\times {{10}^{-11}}\]
D) \[1.0\times {{10}^{-14}}\]
Correct Answer: C
Solution :
For a conjugate acid-base pair: \[{{K}_{a}}\cdot {{K}_{b}}={{K}_{w}}\]\[{{K}_{b}}=\frac{{{K}_{w}}}{{{K}_{a}}}=\frac{{{10}^{-14}}}{3.5\times {{10}^{-4}}}=2.85\times {{10}^{-11}}\]You need to login to perform this action.
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