Given that kb for (ch3)2nh is 5.4 × 10-4 at 25 °c, what is the value of ka for (ch3)2nh2 at 25 °c?

ka = 1.9 × 10^-11

Explanation:

For a weak acid / conjugate base

and

conjugate base / weak acid

where

kw is the dissociation constant of water

= 10⁻⁴

kb = 5.4 × 10⁻⁴

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what are the statements