Question

Which has the maximum conductivity in their 01m solution

• A. $\left[\mathrm{Co}\right({\mathrm{NH}}_3{)}_4\mathrm{Cl}]{\mathrm{Cl}}_2$
• B. $\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_6\right]{\mathrm{Cl}}_3$
• C. $\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_3{\mathrm{Cl}}_3\right]$
• D. $\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_5\mathrm{Cl}\right]{\mathrm{Cl}}_2$

Answer 1

The correct option is B

$\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_6\right]{\mathrm{Cl}}_3$

Explanation for correct option

(B) $\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_6\right]{\mathrm{Cl}}_3$

• The conductivity will increase with the number of ions.
• So, the total number of ions in the complex is four.
• So, $\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_6\right]{\mathrm{Cl}}_3$ has maximum conductivity.

Explanation for the incorrect options

(A) $\left[\mathrm{Co}\right({\mathrm{NH}}_3{)}_4\mathrm{Cl}]{\mathrm{Cl}}_2$

• The total number of ions in this complex is three.

(C) $\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_3{\mathrm{Cl}}_3\right]$

• $\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_3{\mathrm{Cl}}_3\right]$ has no ions.
• If it is mixed with any solution it won't break into any ion.

(D) $\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_5\mathrm{Cl}\right]{\mathrm{Cl}}_2$

• The total number of ions in this complex is three.

Hence, the options (A), (C), and (D) are incorrect.

Therefore, the correct option is (B). $\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_6\right]{\mathrm{Cl}}_3$ has maximum conductivity.