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Explain, why Fe(NH_(4))_(2),(SO_(4))_(2)(H_(2)O_(2))_(6) is a salt but K_(4)[Fe(CN)_(6)] isa complex compound. |
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Answer» SOLUTION : (1) When `Fe(NH_(4))_(2)(SO_(4))_(2)(H_(2)O)_(6)` is DISSOLVED in WATER, it dissociates giving IONS `Fe^(2+), NH_(4)^(+) and SO_(4)^(2-)`. This indicates that the compound ionises into constituent ions. Hence it is a double salt, having formula `FeSO_(4) (NH_(2))_(2) SO_(4) .6H_(2)O`. `k_(4)[Fe(CN)_(6)]` when dissolved in water, the solution does not givethe testfor `Fe^(2+)`and `CN^(-)`ionsbut gives thetests for `K^(+)`and`[Fe(CN)_(6)]^(4-)`ions. lt brgt This indicates that, the constituent ions, `Fe^(2+)`and`CN^(-)`form oneentityof stablecomplex ion `[Fe(CN)_(6)]^(4-)`. Therefore`k_(4)[Fe(CN)_(6)]` is a complex compound. |
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