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Chapter 19: Q6 E (page 1092)

Which of the following is the strongest oxidizing agent: \(VO_4^3,CrO_4^{2 - },\)or \(MnO_4^ - \)?

Short Answer

Expert verified

The strongest oxidation agent is \(MnO_4^ - \)

Step by step solution

01

Oxidation agent:

An oxidizing agent is usually a chemical species that tends to oxidize other substances, by increasing oxidation state of the substance by making it lose electrons.

02

Compairing the given oxidation agent:

The strongest oxidation agent can easily accept electron;

  1. \(MnO_4^ - + 8{H^ + } + 5{e^ - } \to M{n^{2 + }} + 4{H_2}O\) E = +1.507V
  2. \(CrO_4^{2 - } + 4{H_2}O + 3{e^ - } \to Cr{(OH)_3} + 5O{H^ - }\) E = -0.13V
  3. \(VO_4^{3 - } + 6{H^ + } + 2{e^ - } \to V{O^ - } + 3{H_2}O\) E = +1.256V

Hence, the strongest oxidation agent is \(MnO_4^ - \)

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Most popular questions from this chapter

The following reactions all occur in a blast furnace. Which of these are redox reactions?

\(\begin{aligned}{l}(a)3F{e_2}{O_3}(s) + CO(g) \to 2F{e_3}{O_4}(s) + C{O_2}(g)\\(b)F{e_3}{O_4}(s) + CO(g) \to 3FeO(s) + C{O_2}(g)\\(c)FeO(s) + CO(g) \to Fe(l) + C{O_2}(g)\\(d)C(s) + {O_2}(g) \to C{O_2}(g)\\(e)C(s) + C{O_2}(g) \to 2CO(g)\\(f)CaC{O_3}(s) + CaO(s) \to C{O_2}(g)\\(g)CaO(s) + Si{O_2}(s) \to CaSi{O_3}(l)\end{aligned}\)

Give the oxidation state of the metal, number of \(d\)electrons, and the number of unpaired electrons predicted for \(\left( {Co{{\left( {N{H_3}} \right)}_6}} \right)C{l_3}. \)

Give the oxidation state of the metal for each of the following oxides of the first transition series. (Hint: Oxides of formula M3O4 are examples of mixed valence compounds in which the metal ion is present in more than one oxidation state. It is possible to write these compound formulas in the equivalent format MO∙M2O3, to permitestimation of the metal’s two oxidation states.)

(a) Sc2O3

(b) TiO2

(c) V2O5

(d) CrO3

(e) MnO2

(f) Fe3O4

(g) Co3O4

(h) NiO

(i) Cu2O

Describe the electrolytic process for refining copper.

Draw the crystal field diagrams for \({\left( {Fe{{\left( {N{O_2}} \right)}_6}} \right)^{4 - }}\)and \({\left( {Fe{F_6}} \right)^{3 - }}.\)State whether each complex is high spin or low spin, paramagnetic or diamagnetic, and compare \({\Delta _{oct }}\)to \(P\)for each complex.
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