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Chapter 19: Q.10E (page 1092)

Would you expect an aqueous manganese (VII) oxide solution to have a pH greater or less than 7.0? Justify your answer.

Short Answer

Expert verified

An aqueous manganese (VII) oxide has pH less than 7.0 because it is an acid.

Step by step solution

01

Oxidation of iron:

Manganese oxide (MgO) indicates high adsorption efficiency due to characteristics such as polymorphic structures and high surface area. MgO has been used to the adsorption of anionic and cationic impurities such as heavy metal ions, arsenate, and phosphate.

02

Justifying:

We would expect that an aqueous manganese (VII) oxide solution solution has pH less than 7.0 because this compound is also known as permanganic acid. It is a powerful oxidizing agent which means that it has tha ability to oxidize other substance, in other words to accept their electron.

And if we look at the lewis acid-base theory, lewis acid is a compound that can accept lone pair electron and acid are substance that have pH less than 7.0.

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Most popular questions from this chapter

Is it possible for a complex of a metal in the transition series to have six unpaired electrons? Explain.

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

Predict the products of each of the following reactions and then balance the chemical equations.

(a) Fe is heated in an atmosphere of steam.

(b) NaOH is added to a solution of Fe(NO3)3.

(c) FeSO4 is added to an acidic solution of KMnO4.

(d) Fe is added to a dilute solution of H2SO4.

(e) A solution of Fe(NO3)2 and HNO3 is allowed to stand in air.

(f) FeCO3 is added to a solution of HClO4.

(g) Fe is heated in air.

Indicate the coordination number for the central metal atom in each of the following coordination compounds:

\(\begin{aligned}{}(a)\left( {Pt{{\left( {{H_2}O} \right)}_2}B{r_2}} \right)\\(b)\left( {Pt\left( {N{H_3}} \right)(py)(Cl)(Br)} \right)\left( {py = } \right.pyridine,\left. {{C_5}{H_5}\;N} \right)\\(c)\left( {Zn{{\left( {N{H_3}} \right)}_2}C{l_2}} \right)\\(d)\left( {Zn\left( {N{H_3}} \right)(py)(Cl)(Br)} \right)\\(e)\left( {Ni{{\left( {{H_2}O} \right)}_4}C{l_2}} \right)\\(f){\left( {Fe{{(en)}_2}{{(CN)}_2}} \right)^ + }\left( {en = } \right.ethylenediamine,\left. {{C_2}{H_8}\;{N_2}} \right)\end{aligned}\)

Predict whether the carbonate ligand \(C{O_3}^2\)- will coordinate to a metal center as a monodentate, bidentate, or tridentate ligand.
See all solutions

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