Home
Class 12
CHEMISTRY
Complete the following chemical reaction...

Complete the following chemical reaction equations :
(i)`MnO_(4)^(-)(aq)+C_(2)O_(4)^(2-)(aq)+H^(+)(aq)to`
(ii) `Cr_(2)O_(7)^(2-)(aq)+Fe^(2+)(aq)+H^(+)(aq)to`

A

`MnO_(4)^(-)` can be used in aqueous `HCI`

B

`Cr_(2)O_(7)^(2-)` can be used in aqueous `HCI`

C

`MnO_(4)^(-)` can be used in aqueous `H_(2)SO_(4)`

D

`Cr_(2)O_(7)^(2-)` can be used in aqueous `H_(2)SO_(4)`

Text Solution

Verified by Experts

The correct Answer is:
A
`2MnO_(4)^(Theta) +16H^(o+) +10CI^(Theta) rarr 5CI_(2)(g) +2Mn^(2+) 1+8H_(2)O`
Cell constituted is `Pt|CI_(2)|CI^(Theta) ||MnO_(4)^(-) |Mn^(2+), H^(+)|Pt`
`E_(cell) = E_(MnO_(4)^(Theta)//Mn^(2+))^(Theta) -E_(CI_(2)//CI^(Theta))`
`= 1.51-1.40 = 0.11V`
Since the cell voltage is +ve, hence reaction will take place. `MnO_(4)^(Theta)` will oxidise both `Fe^(+2)` and `HCI`.
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    ALLEN|Exercise EXERCISE-05 [A]|28 Videos

  • CHEMISTRY AT A GLANCE

    ALLEN|Exercise ORGANIC CHEMISTRY|472 Videos

  • HYDROCARBON

    ALLEN|Exercise MCQ|15 Videos

Similar Questions

Explore conceptually related problems

Complete the following chemical equations : (i) MnO_(4)^(-) (aq) + S_(2)O_(3)^(2-) (aq) + H_(2) O(l) to1 (ii) Cr_(2)O_(7)^(2-) (aq) + Fe^(2+)(aq) + H^(+) (aq) to

(a) Complete the following chemical equations : (i) MnO_(4)^(-) (aq) + S_(2)O_(3)^(2-) (aq) + H_(2)O(l) to (ii) Cr_(2)O_(7)^(2-)(aq)+Fe^(2+) (aq) + H^(+) (aq) to (b) Explain the following observatons : (i) La^(3+) (Z = 57) and Lu^(3+) (Z = 71) do not show any colour in solutions. (ii) Among the divalent cations in the first series of transition elements, manganese exhibits the maximum paramagnetism. (iii) Cu^(+) ion is not known in aqueous solutions.

(a) Complete the following chemical reaction equations : (i) MnO_(4(aq))^(-) + C_(2)O_(4(aq))^(2-) + H_((aq))^(+) to (ii) Cr_(2) O_(7 (aq))^(2-) + Fe_((aq))^(2+) + H_((aq))^(+) to (b) Explain the following observations about the transition/inner transition elements : (i) There is in general an increase in density of element from titanium (Z = 22) to copper ( Z= 29). (ii) There occurs much more frequent metal-metal bonding in compounds of heavy transition elements ( 3^(rd) series). (iii) The members in the actinoid series exhibit a larger number of oxidation states than the corresponding members in the lanthanoid series.

Complete the follwing chemical equations for reactions : (i) Fe^(@+) (aq) + MnO_(4)^(-)(aq) + H^(+) (aq) rarr (ii) Cr_(2)O_(7)^(2-)(aq) + I^(-)(aq) + H^(+) (aq) rarr .

Complete the following chemical equation: (i) MnO_(4)^(-)(aq)+S_(2)O_(3)^(2-)(aq)+H_(2)O(I) to (ii) MnO_(4)^(-) +NO_(2)^(-)+H^(+) to

(a) Complete the following chemical equations for reactions : (i) MnO_(4(aq))^(-) + S_(2)O_(3(aq))^(2-) + H_(2)O_((l)) to (ii) Cr_(2)O_(7 (aq))^(2-) + H_(2)S_((g)) + H_((aq))^(+) to (b) Give an explanation for each of the following observations : (i) The gradual decrease in size (actinoid contraction) from element to element is greater among the actinoids than that among the lanthanoids (lanthanoid contraction.) (ii) The greatest number of oxidation states are exhibited by the members in the middle of a transition series. (iii) With the same d-orbitals configuration (d^(4)) Cr^(2+) ion is a reducing agent but Mn^(3+) ion is an oxidising agent .

Complete the following chemical equations : (i) P_(4) (s) +NaOH (aq) +H_(2)O (l) to (ii) I^(-) (aq) +H_(2)O (l) +O_(3) (g) to

Complete the following chemical equation: (i) MnO_(4)^(-)(aq)+s_(2)O_(3)^(2-)(aq)+H_(2)O(I) to (ii) MnO_(4)^(-) +NO_(2)^(-)+H^(+) to State reason for the following : (i) Cu(I) ion is not stable in an aqueous solution. (ii) Unlike Cr^(3+),Mn^(2+),Fe^(3+) and the subsequently other M^(2+) ions of the 3d series of elements, the 4d and the 5d series metals generally do not form stable cationic species.

Complete and balance the following equations: MnO_(4)^(-) (aq) + H_(2)O_(2)(aq) rarr ______+_______

(a) Complete the following chemical equations: (i) Cr_(2) O_(7)^(2-) (aq) + H_(2) S(g) + H^(+) (aq) to (ii) Cu^(2+)(aq) + I^(-) (aq) to (b) How would you account for the following : (i) The oxidising power of oxoanions are in the order VO_(2)^(+) lt Cr_(2)O_(7)^(2-) lt Mn O_(4)^(-) (ii) The third ionization enthalpy of manganess (Z = 25) is exceptionally high. (iii) Cr^(2+) is a stronger reducing agent than Fe^(2+) .

ALLEN-ELECTROCHEMISTRY-EXERCISE -05 [B]
  1. The correct order of equivalent conductance at infinite dilution of ...

    Text Solution

    |

  2. The reaction 3ClO^(ө)(aq)rarrClO(3)^(-)(aq)+2Cl^(ө)(aq) is an exam...

    Text Solution

    |

  3. Complete the following chemical reaction equations : (i)MnO(4)^(...

    Text Solution

    |

  4. Two students use same stock solution of ZnSO(4) and a solution of CuSO...

    Text Solution

    |

  5. In an electrolytic cell, the flow of electrons is form

    Text Solution

    |

  6. Find the equilibrium constant of the following reaction Cu^(2+) (a...

    Text Solution

    |

  7. Zn|Zn^(2+)(a=0.1M)||Fe^(2+)(a=0.01M)Fe. The EMF of the above cell i...

    Text Solution

    |

  8. Calculate DeltaG(r)^(@) of the following reaction Ag^(+)(aq)+cI^(-)(...

    Text Solution

    |

  9. The rusting of iron takes place as follows : 2H^(o+)+2e^(-) +(1)/(2...

    Text Solution

    |

  10. We have taken a saturated solultion of AgBr, K(SP) is 12 xx 10^(-4). I...

    Text Solution

    |

  11. Tollen reagent is used for the detection of aldehydes. When a solution...

    Text Solution

    |

  12. Tollen reagent is used for the detection of aldehydes. When a solution...

    Text Solution

    |

  13. Tollen reagent is used for the detection of aldehydes. When a solution...

    Text Solution

    |

  14. Chemical reactions involve interaction of atoms and molecules. A large...

    Text Solution

    |

  15. Chemical reactions involve interaction of atoms and molecules. A large...

    Text Solution

    |

  16. Chemical reactions involve interaction of atoms and molecules. A large...

    Text Solution

    |

  17. Redox reactions play a pivotal role in chemistry and biology. The valu...

    Text Solution

    |

  18. Redox reactions play a pivotal role in chemistry and biology. The valu...

    Text Solution

    |

  19. Electrolysis of dilute aqueous NaCl solution was carried out by passin...

    Text Solution

    |

  20. For the reduction of NO(3)^(c-) ion in an aqueous solution, E^(c-) is ...

    Text Solution

    |