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Complete the followingreaction : (i)Cr_(2)O_(7)^(2-) to (ii)Cr_(2)O_(7)^(2-)+ 6I^(-)+ 14H^(+) to (iii)Cr_(2) O_(7)^(2-)+ 3S^(2-)+ 14H^(+) to (iv ) Cr_(2) O_(7)^(2-) + 3SO_(2) + 2H^(+) to (v ) Cr_(2) O_(7)^(2-)+ 3Sn^(2+) + 14H^(+) to (vi)K_(2)Cr_(2)O_(7) + 8H_(2) SO_(4) + 3CH_(3) CH_(2) OH to (vii) 2MnO_(4)^(-)+ 5 (COO)^(2-)+ 6H^(+) to (viii)2MnO_(4) ^(-) + 10I^(-)+ 16^(+) to (ix)2MnO_(4)^(-)+5S^(2-) +16H^(+) to (x ) 2MnO_(4)^(-)+ 5NO_(2)+ 6H^(+) to (xi )2KMnO_(4)+ 3H_(2) SO_(4)+ 5CH_(3) CH_(2)OH to (xii)2MnO_(4) ^(-)+5SO_(3)^(2-)+ 6H^(+) to |
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Answer» Solution :(i) It oxidisesferroussalts to ferricsalts . `Cr_(2) O_(7)^(2-)+ 6Fe^(2+)+ 14H^(+) to` `2Cr^(3+)+ 6Fe^(3+) + 7H_(2) O` (II) It oxidisesiodide ionsto IODINE `Cr_(2) O_(7)^(2-)+ 6I^(-)+ 14H^(+) to` `2Cr^(3+)+ 3I_(2)+ 7H_(20O` (iii)It oxidisessulphide ion to sulphur `Cr_(2) O_(7)^(2-)+ 3S^(2-)+14H^(+) to` `2Cr^(3+)+3S + 7H_(2)O` (iv) It OXIDISES sulphurdioxideto sulphateion `Cr_(2) O_(7)^(2-)+ 3SO_(2) + 2H^(+) to` `3Cr^(3+)+ 3SO_(4)^(2-) + H_(2)O` (v)It oxidisesstannous saltto stannicsalt `Cr_(2) O_(7)^(2-)+ 3Sn^(2+)+ 14H^(+) to ` `2Cr^(3+)+ 3Sn^(4+)+ 7H_(2) O` (VI) It oxidisesalcohols to acids `2K_(2) Cr_(2) O_(7)+ 8H_(2)SO_(4)+ 3CH_(3)CH_(2)OH to ` `2K_(2)SO_(4)+ 2Cr_(2)(SO^(4))_(3) + 3CH_(3)COOH+ 11H_(2)O` (VII)It oxidisesoxalicacid toCO2 `2MnO_(4)^(-) + 5(COO)^(2-)+ 6H^(+) to` `2Mn^(2+) + 10CO_(20 + 8H_(2)O` (viii) It oxidisesiodideions to iodine `2MnO_(4)^(-)+ 10I^(-) 16H^(+) to ` `2Mn^(2+) + 5I_(2) + 8H_(2) O` (ix) Itoxidisessulphideionto sulphur `2MnO_(4)^(-)+ 5S^(2-)+ 16H^(+) to` `2Mn^(2+) + 5S + 8H_(2) O` (x )It oxidisesnitrites tonitrates `2MnO_(4)^(-)+ 5NO_(2)^(-)+ 6H^(+) to ` `2Mn^(2+) + 5NO_(3)^(-)+ 3H_(2)O` (xi )It oxidisesalcohols to aldehydes. `2KMnO_(4)+3H_(2) SO_(4) + 5CH_(3) CH_(2) OHto2K_(2)SO_(2) +2MnSO_(4)+ 5Ch_(3)CHO+ 8H_(2) O` (xii) It oxidisessulphiteto sulphate `2MnO_(4)^(-)+ 5SO_(3)^(2-) + 6H^(+) to ` `2Mn^(2+) +5SO_(4) ^(2-)+ 3H_(2)CO` |
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