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

Question

The correct decreasing order of basic strength of the following species is . H2O, NH3, OH-, NH-2 (A) NH2 > OH- > NH3 > H2O (B) OH- > NH2- > H2O > NH3 (C) NH3 > H2O > NH2- > OH- (D) H2O > NH3 > OH- > NH2

Tardigrade Admin · Accepted Answer

NH3 is more basic than H2O, therefore NH-2 (conjugate base of weak acid NH3) is a stronger base than OH-. Thus, decreasing order of basic strength is NH2 > OH- > NH3 > H2O.

Q. The correct decreasing order of basic strength of the following species is_____________ .
$H_{2} O$ , $N H_{3}$ , $O H^{-}$ , $N H_{2}^{-}$

$N H_{2} > O H^{-} > N H_{3} > H_{2} O$

$O H^{-} > N H_{2}^{-} > H_{2} O > N H_{3}$

$N H_{3} > H_{2} O > N H_{2}^{-} > O H^{-}$

$H_{2} O > N H_{3} > O H^{-} > N H_{2}$

$N H_{3}$ is more basic than $H_{2} O$ , therefore $N H_{2}^{-}$ (conjugate base of weak acid $N H_{3}$ ) is a stronger base than $O H^{-}$ . Thus, decreasing order of basic strength is $N H_{2} > O H^{-} > N H_{3} > H_{2} O$ .

Q. The correct decreasing order of basic strength of the following species is_____________ . H2​O, NH3​, OH−, NH2−​

NH2​>OH−>NH3​>H2​O

OH−>NH2−​>H2​O>NH3​

NH3​>H2​O>NH2−​>OH−

H2​O>NH3​>OH−>NH2​