Calculate the hydrolysis constant $(K_h)$ of the salt containing $NO_2^-$. Given the $K_a$ for $HNO_2 = 4.5 \times 10^{-10}$.
- A$2.22 \times 10^{-5}$
- B$2.02 \times 10^{5}$
- C$4.33 \times 10^{4}$
- D$3.03 \times 10^{-5}$
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