Of the following complex ions. The one that probably has the largest overall formation constant K f is :-

Question

Of the following complex ions. The one that probably has the largest overall formation constant K f is :- (A) [ Co ( NH 3)6]3+ (B) [ Co ( H 2 O )6]3+ (C) [ Co ( NH 3)2( H 2 O )4]3+ (D) [ Co ( en )3]3+

Tardigrade Admin · Accepted Answer

order of K f =4>1>2>3 [ Co ( en )3]3+ has highest value of K f among complex due to chelation

Q. Of the following complex ions. The one that probably has the largest overall formation constant $K_{f}$ is :-

$[C o (N H_{3})_{6}]^{3 +}$

$[C o (H_{2} O)_{6}]^{3 +}$

$\left[ Co \left( NH _{3}\right)_{2}\left( H _{2} O \right)_{4}\right]^{3+}

\left[ Co ( en )_{3}\right]^{3+}$

order of $K_{f} = 4 > 1 > 2 > 3$
$[C o (e n)_{3}]^{3 +}$ has highest value of $K_{f}$ among complex due to chelation

Q. Of the following complex ions. The one that probably has the largest overall formation constant Kf​ is :-

[Co(NH3​)6​]3+

[Co(H2​O)6​]3+