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Balance the chemical reaction : (i) ov...

Balance the chemical reaction :
(i) `overset(+7)MnO_(4)^(-) + 3H_(2) overset(-2)O overset("noutral medium") to overset(+4)MnO_(2) + overset(0)O_(2)`
(ii)Write the balanced equation when ferrous sulphate is treated with acidified `(H_(2)SO_(4))` potassium permanganate .
(iii) Balance the equation `MnO_(4) + C_(2)O_(4) + H^(+) to CO_(2) + Mn^(+2) + H_(2)O`
(iv) Balance the equation `K_(2)Cr_(2)O_(7) + HCl to KCl + CrCl_(3) + H_(2)O + Cl_(2)`

Text Solution

Verified by Experts

(i) ` 2MnO_(4)^(-) + 3H_(2)O to 2MnO_(2) + 3O_(2) + 2OH^(-) + 2H_(2)O`
(ii) `10 FeSO_(4) + 2KMnO_(4) + 8H_(2)SO_(4) to 5Fe_(2)(SO_(4))_(3) + 2MnSO_(4) + K_(2)SO_(4) + H_(2)O`
(iii) `2MnO_(4)^(-) + 5C_(2)O_(4)^(2-) + 16H^(+) to 2Mn^(2+) + 10CO_(2) + 8H_(2)O`
(iv) ` K_(2)Cr_(2)O_(7) + 14HCl to 2KCl + 2CrCl_(3) + 7H_(2)O + 3Cl_(2)`
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Balance the chemical equations: K_2Cr_2O_7 + HCl to KCl + CrCl_3 + H_2O + Cl_2

MnO_(4)^(-) + C_(2) O_(4)^(2-) + H^(+) = CO_(2) + Mn^(2+) + H_(2) O

Knowledge Check

  • In the reaction MnO_(4)^(-)+SO_(3)^(-2)+H^(+)rarrSO_(4)^(-2)+Mn^(2+)+H_(2)O

    A
    `MnO_(4)^(-) and H^(+)` both are reduced
    B
    `MnO_(4)^(-)` is reduced and `H^(+)` is oxidised
    C
    `MnO_(4)^(-)` is reduced and `SO_(3)^(2-)` is oxidised
    D
    `MnO_(4)^(-)` is oxidised and `SO_(3)^(2-)` is reduced
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