Given that $K_a$ for HCN is $6.2 \times 10^{-10}$ at 25 $^\circ$C, what is the value of $K_b$ for CN$^-$ at 25 $^\circ$C?
$K_b$ =
Given that $K_b$ for $(CH_3)_3N$ is $6.3 \times 10^{-5}$ at 25 $^\circ$C, what is the value of $K_a$ for $(CH_3)_3NH^+$ at 25 $^\circ$C?
$K_a$ =
