Advertisements
Advertisements
Question
Which of the following redox couple is a stronger reducing agent?
Zn (E0 = - 0.76 V) and Fe (E0 = - 0.44 V)
Advertisements
Solution
Zn has a larger negative value of E0 than Fe. Thus, Zn is a stronger reducing agent than Fe.
APPEARS IN
RELATED QUESTIONS
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.
Calculate the oxidation number of the underlined atom.
HNO3
Calculate the oxidation number of the underlined atom.
K2C2O4
Calculate the oxidation number of the underlined atom.
H2S4O6
Justify that the following reaction is redox reaction; identify the species oxidized/reduced, which acts as an oxidant and which acts as a reductant.
\[\ce{I2_{(aq)} + 2S2O^{2-}_{3(aq)}->S4O^{2-}_{6(aq)} + 2I^-_{ (aq)}}\]
What is oxidation?
Identify the following pair of species is in its oxidized state.
Mg/Mg2+
Identify the following pair of species is in its oxidized state?
Cl2/Cl−
Provide the stock notation for the following compound:
Tl2O
Provide the stock notation for the following compound:
MnO
Assign oxidation number atom in the following species.
Na2S2O3
Complete the following table:
Assign oxidation number to the underlined species and write Stock notation of compound
| Compound | Oxidation number | Stock notation |
| AuCl3 | ||
| SnCl2 | ||
| \[\ce{\underline{{V}}_2O^{4-}_{7}}\] | ||
| \[\ce{\underline{{Pt}}Cl^2-_6}\] | ||
| H3AsO3 |
The following statements are CORRECT, EXCEPT:
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 ______.
All of these are CORRECT for the complex K4[Mn(CN)6], EXCEPT:
In which among the following compounds, oxidation number of nitrogen is + 5?
The sum of oxidation states of all atoms in \[\ce{SnO^{2-}_2}\] and CO2 are ____________ respectively.
Which of the following is INCORRECT?
Which among the following pair of elements show highest oxidation state +7 in their different compounds?
The oxidation number of Cr in \[\ce{Cr(OH)^-_4}\] ion is ______.
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 ______.
Which of the following explanation is correct about the given below reaction?
\[\ce{Cr2O^2-_7 + H2O -> 2CrO^2-_4 + 2H+}\]
Among group 16 elements, which one does not show −2 oxidation state?
In which of the compounds does ‘manganese’ exhibit the highest oxidation number?
Find CORRECT statement for following reaction.
\[\ce{2Ag+ + Cu -> 2Ag + Cu^2+}\]
