1.

Complete and balance the following equation: (i). K_2Cr_2O_7+…+4H_2SO_4toK_2SO_4+Cr_2(SO_4)_3+7H_2O+3I_2 (ii). KK_2Cr_2O_7underset(400^@C)overset(triangle)to (c). KMnO_4underset(200^@C)overset(triangle)to (iv). MnO_4^(ɵ)+AsO_3^(ɵ)+H^(o+)to (v). K_(2)Cr_(2)O_(7)+overset(NH_(4)Cl)to

Answer»

SOLUTION :(i). `Cr_2O_7^(2-)+6Ii^(ɵ)+14H^(o+)to2Cr^(3+)+7H_2O+3I_2`
(ii). `K_2Cr_2O_7overset(Delta)toK_2CrO_4+Cr_2O_3+O_2`
(iii). `KMnO_4overset(Delta)toK_2MnO_4+MnO_2+O_2` (DISPROPORTIONATION)
(iv). `2MnO_4^(ɵ)+5AsO_3^(ɵ)+6H^(o+)to2Mn^(2+)+3H_2O+5AsO_4^(3-)`
(V). `K_2Cr_2O_7+2NH_4C"l" to(NH_4)_2Cr_2O_7+2KCl`


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