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Choose the correct option. The coefficients p, q, r, s in the reaction pCrX2OX7X2Θ+qFeX2⊕⟶rCrX3⊕+sFeX3⊕+HX2O respectively are:

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प्रश्न

Choose the correct option.

The coefficients p, q, r, s in the reaction \[\ce{{p}Cr2O7^{2Θ} + {q}Fe^{2⊕}->{r}Cr^{3⊕} + {s}Fe^{3⊕} + H2O}\] respectively are:

विकल्प

  • 1, 2, 6, 6

  • 6, 1, 2, 4

  • 1, 6, 2, 6

  • 1, 2, 4, 6

MCQ
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उत्तर

The coefficients p, q, r, s in the reaction \[\ce{{p}Cr2O7^{2Θ} + {q}Fe^{2⊕}->{r}Cr^{3⊕} + {s}Fe^{3⊕} + H2O}\] respectively are: 1, 6, 2, 6

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अध्याय 6: Redox Reactions - Exercises [पृष्ठ ९१]

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बालभारती Chemistry [English] Standard 11 Maharashtra State Board
अध्याय 6 Redox Reactions
Exercises | Q 1. (D) | पृष्ठ ९१

संबंधित प्रश्न

Choose the correct option.

Oxidation numbers of Cl atoms marked as Cla and Clb in CaOCl2 (bleaching powder) are

\[\begin{array}{cc} \ce{Cl^{{a}}}\phantom{.} \\/\phantom{...} \\ \ce{Ca}\phantom{......} \\ \backslash\phantom{..} \\\phantom{........} \ce{O-Cl^{{b}}}\phantom{.} \end{array}\]


Choose the correct option.

Oxidation number of oxygen in superoxide is


In which chemical reaction does carbon exhibit variation of oxidation state from - 4 to + 4? Write a balanced chemical reaction.


Provide the stock notation for the following compound:

HAuCl4


Provide the stock notation for the following compound:

CuO


Assign oxidation number atom in the following species.

\[\ce{Cr(OH)^Θ_4}\]


Which of the following redox couple is a stronger oxidizing agent?

\[\ce{MnO^Θ_4}\](E0 = 1.51 V) and \[\ce{Cr2O^{2Θ}_7}\](E0 = 1.33 V)


Which of the following redox couple is a stronger reducing agent?

Zn (E0 = - 0.76 V) and Fe (E0 = - 0.44 V)


The following statements are CORRECT, EXCEPT:


The oxidation number of oxygen in peroxides is ____________.


What is the oxidation number of Mn in \[\ce{MnO^{2-}_4}\] ion?


Which of the following is CORRECT?

\[\ce{H3PO4_{(aq)} + 3KOH_{(aq)} -> K3PO4_{(aq)} + 3H2O_{(l)}}\]


In the reaction,

\[\ce{MnO^{-1}_4 (aq) + Br^{-1}(aq) -> MnO2(s) + BrO^{-1}_3(aq)}\]

the correct change in oxidation number of the species involved is ______.


Which of the following is NOT an example of redox reaction?


In the following reaction, the oxidation number of Cr changes.

\[\ce{ClO^-_{( aq)} + Cr(OH)^-_{4(aq)} -> CrO^{2-}_{4(aq)} + Cl^-_{( aq)} (basic)}\]


Identify the strongest oxidising agent.

\[\ce{Na^+ + e^- -> Na}\]; E0 = −2.714 V

\[\ce{Pt^{2+} + 2e^- -> Pt}\]; E0 = +1.200 V

\[\ce{I2 + 2e^- -> 2I^-}\]; E0 = + 0.535 V

\[\ce{Co^{2+} + 2e^- -> Co}\]; 0 = −0.280 V


The oxidation number of sulphur in S8 molecule is ______.


When methane undergoes combustion in air, the oxidation number of C ____________.


The oxidation state of phosphorous in Mg2P2O7 is ______.


The oxidation number of Cr in \[\ce{Cr(OH)^-_4}\] ion is ______.


The oxidation number of phosphorous in Ba(H2PO2)2 is ______.


What is the oxidation number of Cr in K2Cr2O7?


What is the oxidation state of chlorine atom in perchloric acid?


The brown ring complex is formulated as [Fe(H2O)5NO]SO4. The oxidation number of iron is ______.


Among group 16 elements, which one does not show −2 oxidation state?


Which of the following statements are INCORRECT?

  1. All the transition metals except scandium form MO oxides which are ionic.
  2. The highest oxidation number corresponding to the group number in transition metals oxides is attained in Sc2B5 to Mn2B7.
  3. Basic character increases from V2B5 to V2B4 to V2B5.
  4. V2B4 dissolves in acids to give VO43– salts.
  5. CrO is basic but Cr2B5 is atmospheric.

Choose the correct answer from the options given below:


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