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The equation which is balanced and repre...

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

A

`Li_(2)O+2KCl rarr2LiCl+K_(2)O`

B

`[CoCl(NH_(3))_(5)]^(+)+5H^(+)rarrCo^(2+)+5NH_(4)^(+)+Cl^(+)`

C

`[Mg(H_(2)O)_(6)]^(2+)+(EDTA)^(4-)overset("excess NaOH")rarr[Mg(EDTA)]^(2+)+6H_(2)O`

D

`CuSO_(4)+4KCNrarrK_(2)[Cu(CN)_(4)]+K_(2)SO_(4)`

Text Solution

Verified by Experts

The correct Answer is:
B
(a) `Li_(2)O+KClrarr2LiCl+K_(2)O`
wrong equation, since a stronger base `(K_(2)O)` cannot be generated by a weaker base `Li_(2)O`.
(b) `[CoCl(NH_(3))_(5)]+5H^(oplus)rarrCO^(2+)(aq)+5NH_(4)^(oplus)+Cl^(-)`
This is correct. All ammine complexes can be destroyed by adding `H^(oplus)`
(c) `[Mg(H_(2)O)_(6)]^(2+)EDTA^(4-)underset("excess")overset(OH^(-))rarr[Mg(EDTA)]^(2+)+6H_(2)O`
This is wrong, since the formula of complex must be `[Mg(edta)]^(2-)`
(d) `2CuSO_(4)+10KCNrarr2K_(3)[Cu(CN)_(4)]+2K_(2)SO_(4)+(CN)_(2)uarr` it is a wrong option.
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