Interpretation:
The oxidation states of all the atoms in MnO2 should be determined.
Concept Introduction:
The oxidation state is defined as the charge(s) that an atom would have when electron(s) were transferred completely from a molecule or ion.
Interpretation:
The oxidation states of all the atoms in BaCrO4 should be determined.
Concept Introduction:
The oxidation state is defined as the charge(s) that an atom would have when electron(s) were transferred completely from a molecule or ion.
Interpretation:
The oxidation states of all the atoms in H2 SO3 should be determined.
Concept Introduction:
The oxidation state is defined as the charge(s) that an atom would have when electron(s) were transferred completely from a molecule or ion.
Interpretation:
The oxidation states of all the atoms in Ca3 (PO4 )2 should be determined.
Concept Introduction:
The oxidation state is defined as the charge(s) that an atom would have when electron(s) were transferred completely from a molecule or ion.
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Introductory Chemistry: A Foundation
- Balance each of the following equations according to the half-reaction method: (a) MnO4(aq)+NO2(aq)MnO2(s)+NO3(aq) (in base) (b) MnO42(aq)MnO42(aq)+MnO2(s) (in base) (c) Br2(l)+SO2(g)Br(aq)+SO42(aq) (in acid)arrow_forwardBalance each of the following equations according to the half-reaction method: (a) Sn2+(aq)+Cu2+(aq)S4+(aq)+Cu+(aq) (b) H2S(g)+Hg22+(aq)Hg(l)+S(s)(inacid) (c) CN(aq)+ClO2(aq)CNO(aq)+Cl(aq)(inacid) (d) Fe2+(aq)+Ce4+(aq)Fe3+(aq)+Ce3+(aq) (e) HBrO(aq)Br(aq)+O2(g)(inacid)arrow_forwardDetermine the oxidation states of the elements in the compounds listed. None of the oxygen-containing compounds are peroxides or superoxides. (a) H2SO4 (b) Ca(OH)2 (C) BrOH (d) ClNO2 (e) TiCl4 (f) NaHarrow_forward
- Substances A2, B2, and C2 can all act as oxidizing agents. In solution, A2 is green, B2 is yellow, and C2 is red. In the reactions in which they participate, they are reduced to A, B, and C ions, all of which are colorless. When a solution of C2 is mixed with one containing B ions, the color changes from red to yellow. Which species is oxidized? __________ Which is reduced? __________ When a solution of C2 is mixed with one containing A ions, the color remains red. Is C2 a better oxidizing agent than A2? __________ Is C2 a better oxidizing agent than B2? __________ Arrange A2, B2, and C2 in order of increasing strength as an oxidizing agent. ___________________ _______________ ______________ weakest oxidizing agentstrongest oxidizing agentarrow_forwardComplete and balance each of the following half-reactions (steps 2—5 in half-reaction method): (a) Sn4+(aq)Sn2+(aq) (b) [Ag( NH 3)2]+(aq)Ag(s)+NH3(aq) (c) Hg2Cl2(s)Hg(l)+Cl(aq) (d) H2O(l)O2(g) (in acidic solution) (e) IO3(aq)I2(s) (f) SO32(aq)SO42(aq) (in acidic solution) (g) MnO4(aq)Mn2+(aq) (in acidic solution) (h) CI(aq)CIO3(aq) (in basic solution)arrow_forwardWhat is a half-reaction? Why must the number of electrons lost in the oxidation half reaction equal the number of electrons gained in the reduction half-reaction? Summarize briefly the steps in the hall-reaction method for balancing redox reactions. What two items must be balanced in a redox reaction (or any reaction)?arrow_forward
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