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  3. Chemistry
  4. The correct decreasing order of basic strength of the following species is . H2O, NH3, OH-, NH-2

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Q. The correct decreasing order of basic strength of the following species is_____________ .
$H_2O$, $NH_3$, $OH^-$, $NH^-_2$

Amines

Solution:

$NH_3$ is more basic than $H_2O$, therefore $NH^-_2$ (conjugate base of weak acid $NH_3$) is a stronger base than $OH^-$. Thus, decreasing order of basic strength is $NH_2 > OH^- > NH_3 > H_2O$.