MCQ
Which complex is likely to show optical activity :
- ATrans $-[Co(NH_3)_4Cl_2]^+$
- B$[Cr(H_2O)_6]^{3+}$
- ✓Cis $-[Co(NH_3)_2(en)_2]^{3+}$
- DTrans $-[Co(NH_3)_2(en)_2]^{3+}$
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(Molecular wight of $HA= 60, \,d_{solution} = 1\,gm/ml$)
Assume $100 \%$ ionization for both $NaCl$ and $MgCl _2$
Given : $K _{ b }\left( H _2 O \right)=0.52\,K\,kg\,mol ^{-1}$
Molar mass of $NaCl$ and $MgCl _2$ is 58.5 and $95\,g$ $mol ^{-1}$ respectively.

