Concept explainers
Interpretation:
Importance of systematic method for balancing
Concept Introduction:
In order to balance oxidation reduction reactions occur in aqueous solutions, we use half reaction method. In this method, the main reaction is separated into two half reactions which represents the oxidation process and the reduction process. Half reactions are chemical equations that have electrons as reactant or product. The main principle that should be followed to balance oxidation reduction reaction is to balance the number of electrons lost from the reducing agent and number of electrons gained by the oxidizing agent.
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Chapter 18 Solutions
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_forwardIn balancing oxidation-reduction equations, why is it permissible to add water to either side of the equation?arrow_forwardComplete and balance each of the following half-reactions (steps 25 in half-reaction method): (a) Cr2+(aq)Cr3+(aq) (b) Hg(l)+Br(aq)HgBr42(aq) (c) ZnS(s)Zn(s)+S2(aq) (d) H2(g)H2O(l) (in basic solution) (e) H2(g)H3O+(aq) (in acidic solution) (f) NO3(aq)HNO2(aq) (in acidic solution) (g) MnO2(s)MnO4(aq) (in basic solution) (h) Cl(aq)ClO3(aq) (in acidic solution)arrow_forward
- In balancing oxidation-reduction reactions, why is it permissible to add water to either side of the equation?arrow_forward. For each of the following unbalanced oxidation-reduction chemical equations, balance the equation by inspection, and identify which species is the reducing agent. a.Fe(s)+O2(g)Fe2O3(s)b.Al(s)+Cl2(g)AlCl3(s)c.Mg(s)+P4(s)Mg3P2(s)arrow_forwardWrite oxidation and reduction half-reactions for these unbalanced redox equations. For each, show that the sum of the half-reactions is the overall reaction. (a) Cd(s) + Cu2+(aq) Cd2+ (aq) + Cu(s) (b) Mg(s) + Cr3+ (aq) Mg2+ (aq) + Cr(s) (c) Fe3+ (aq) + Cu+ (aq) Fe2+ (aq) + Cu2+ (aq)arrow_forward
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