The equation which is balanced and represents the correct product(s) is .

Options

A. `[Co(NH_(3))_(5)CI]^(+) + 5H^(+) rarr 5NH_(4)^(+) + CI^(-)`
B. `Li_(2)O + 2KCI rarr 2LiCI + K_(2)O`
C. `CuSO_(4) + 4KCN rarr K_(2) [Cu(CN)_(4)] + K_(2)SO_(4)`
D.

Answer

A

Explanation

Equation (4) is not balanced w.r.t charge: `[Mg(EDTA)]^(2-)`
Equation (3) gives `K_(3) [Cu(CN)_(4)]` as the product
Equation (2) is unfavourable in the forward direction as `K_(2)O` is unstable while `Li_(2)O` is stable.
Only Equalition (4) is correct and balanced.