Yep, sahi hai....but kaise ?
1)A 0.01M complex of CoCl2 & NH3 (molar ratio 1:4) is found to have effective molarity of 0.02M (evaluated frm colligative property).
What is the formula of the complex ?
A) [Co(NH3)4]Cl3
B) [Co(NH3)4Cl2]Cl
C) [Co(NH3)5Cl]Cl
D) [Co(NH3)3Cl3]
2) MULTIPLE ANSWER
CuSO4 reacts with KCN to form-
A) Cu(CN)2 B) CuCN
C) K2[Cu(CN)4] D) K3[Cu(CN)4]
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6 Answers
Asish Mahapatra
·2010-01-29 01:16:14
effective molarity is found to be twice that of molarity taken
=> that the molecule must dissociate into two substances (ions)
hence (b) (c) may be correct
but then Q mentions that CoCl2 : NH3 = 1:4 (so (b)) ignoring the outer Cl (disturbing the ratio)