Published by:
CGP EDU Academic Team
Published on: August 11, 2026
The equation which is balanced and represents the correct product(s) is :
A
Li 2 O + 2KCl ⎯→ 2LiCl + K 2 O
B
[CoCl(NH 3 ) 5 ] + + 5H + ⎯→ Co 2+ + 5NH 4 + + Cl –
C
[Mg(H 2 O) 6 ] 2+ + (EDTA) 4– 
[Mg(EDTA)] 2+ + 6H 2 O
[Mg(EDTA)] 2+ + 6H 2 O
D
CuSO 4 + 4KCN ⎯→ K 2 [Cu(CN) 4 ] + K 2 SO 4
Text Solution
Verified by ExpertsThe correct answer is:
B
Li 2 O + KCl ⎯→ 2LiCl + K 2 O
wrong equation, since a stronger base (K 2 O) cannot be generated by a weaker base Li 2 O
[CoCl(NH 3 ) 5 ] + 5H ⊕ ⎯→ Co 2+ (aq) + 5NH 4 ⊕ + Cl –
This is correct. All ammine complexes can be destroyed by adding H ⊕
[Mg(H 2 O) 6 ] 2+ + edta 4– 
[Mg(edta] 2+ + 6H 2 O
This is wrong, since the formula of complex must be [Mg(edta)] 2–
2CuSO 4 + 10KCN ⎯→ 2K 3 [Cu(CN) 4 ] + 2K 2 SO 4 + (CN) 2
it is a wrong option, as given in paper.
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