= ny In order to determine which atom is the oxidizing agent and which atom is the reducing agent in an oxidation- reduction reaction, it is necessary to know: O the oxidation number of the atom the protons number of the atom O the atomic number of the atom 2 the reduction number of the atom F3 3 F4 $ 4 F5 H % 5 F6 Search 6 F7 FB & 7 F9 * 8 F10 ( 9 F11 O S 0 F12 P Prt Sc + Insert Backspace 40%

A solution contains both iron(II) and iron(III) ions. A sample Of the solution is titrated with 35.0 ml, of M KMnO4, which oxidizes Fe2+ to Fe3+. The permanganate ion is reduced to manganese(ll) ion. The equation for this reaction is MnO4(aq)+8 H+(aq)+5Fe2+(aq)Mn2+(aq)+5Fe3+ +4H2OAnother 50.00-mL sample of the solution is treated with zinc, which reduces all the Fe3+ to Fe2+. The equation for this reaction is 2Fe3+(aq)+Zn(s)2Fe2+(aq)+Zn2+(aq)The resulting solution is again titrated with 0.0280 M KMnO4; this time 48.0 ml, is required. What are the concentrations of Fe2+ and Fe3+ in the solution?

Specify which of the following equations represent oxidation reduction reactions, and indicate the oxidizing agent, the reducing agent, the species being oxidized, and the species being reduced. a. CH4(g)+H2O(g)CO(g)+3H2(g) b. 2AgNO3(aq)+Cu(s)Cu(NO3)2(aq)+2Ag(s) c. Zn(s)+2HCl(aq)ZnCl2(aq)+H2(g) d. 2H+(aq)+2CrO42-(aq)Cr2O72-(aq)+H2O(l)

Complete 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)

Consider the following balanced redox reaction in basic medium. 3Sn2+(aq)+Cr2O72(aq)+4H2O3Sn4+(aq)+Cr2O3(s)+8OH(aq) (a) What is the oxidizing agent? (b) What species has the element that increases its oxidation number? (c) What species contains the element with the highest oxidation number? (d) If the reaction were to take place in acidic medium, what species would not be included in the reaction?

Suppose you have three different metals. A, B, and C. When metals A and B come into contact. B confides and A does not corrode. When metals A and C come into contact, A corrodes and C does not corrode. Based on this information, which metal corrodes and which metal does not corrode when B and C come into contact?

Complete and balance the following oxidation-reduction reactions, which give the highest possible oxidation state for the oxidized atoms. (a) Al(s)+F2(g) (b) Al(s)+CuBr2(aq) (single displacement) (c) P4(s)+O2(g) (d) Ca(s)+H2O(l) (products are a strong base and a diatomic gas)

One of the few industrial-scale processes that produce organic compounds electrochemically is used by the Monsanto Company to produce1,4-dicyanobutane. The reduction reaction is 2CH2CHCH+2H++2eNC(CH2)4CN The NC(CH2)4CN is then chemically reduced using hydrogen gas to H2N(CH2)6NH2, which is used in the production of nylon. What current must be used to produce 150.kg NC(CH2)4CN per hour?

An active (metal) electrode was found to gain mass as the oxidation-reduction reaction was allowed to proceed. Was the electrode part of the anode or cathode? Explain.

Identify the following as an oxidation, a reduction, a decomposition, or a dismutation reaction: Cl2+2e2Cl a.a reduction b.an oxidation c.a decomposition d.a dismutation