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प्रश्न
What is oxidation?
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उत्तर
Oxidation is a process that involves the loss of one or more electrons from a substance.
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संबंधित 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:
Calculate the oxidation number of the underlined atom.
K2C2O4
Calculate the oxidation number of the underlined atom.
H2S4O6
Calculate the oxidation number of the underlined atom.
Cr2O72−
Calculate the oxidation number of the underlined atom.
NaH2PO4
Identify the following pair of species is in its oxidized state.
Mg/Mg2+
Identify the following pair of species is in its oxidized state?
Cu/Cu2+
Identify the following pair of species is in its oxidized state?
\[\ce{O2/O^2-}\]
Identify the following pair of species is in its oxidized state?
Cl2/Cl−
Justify the following reaction as a redox reaction.
\[\ce{2Na_{(s)} + S_{(s)} -> Na2S_{(s)}}\]
Find out the oxidizing and reducing agents.
Provide the stock notation for the following compound:
Fe2O3
Which of the following redox couple is a stronger oxidizing agent?
Cl2 (E0 = 1.36 V) and Br2 (E0 = 1.09 V)
Which of the following redox couple is a stronger reducing agent?
Li (E0 = - 3.05 V) and Mg (E0 = - 2.36 V)
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 |
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?
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
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?
Which of the following is INCORRECT?
The sum of oxidation number of all atoms in \[\ce{S2O^{2-}_3}\] ion is ______.
The sum of oxidation states of all atoms in \[\ce{Cr2O^{2-}_7}\] ion is ______.
What is the oxidation number of Carbon in K2C2O4?
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?
Which of the following changes exhibit that nitrogen undergoes oxidation?
