04:11What Are Redox Reactions? (Oxygen Exchange) | Reactions | Chemistry | FuseSchoolFuseSchool - Global Education446views
Multiple ChoiceWhich element is being reduced in the following reaction? Cr2O72- + 3 HNO2 + 5 H+ → 2 Cr3+ + 3NO3- + 4 H2O1628views3comments
Multiple ChoiceIdentify the oxidizing agent and reducing agent from the following redox reaction. Ba (s) + Cl2 (g) → BaCl2 (aq)2059views6rank1comments
Multiple ChoiceWhich element is oxidized and which is reduced in the following reaction?Hg (aq) + HgCl2 (aq) → Hg2Cl21058views4rank1comments
Multiple ChoiceWhich of the following represents an oxidation-reduction reaction? I. PCl3 (aq) + Cl2 (g) → PCl5 (aq) II. 2 AgNO3 (aq) + Cu (s) → Cu(NO3)2 (aq) + 2 Ag (s) III. CO2 (g) + 2 LiOH (aq) → Li2CO3 (aq) + H2O (l)IV. FeCl2 (aq) + 2 NaOH (aq) → Fe(OH)2 (aq) + 2 NaCl (aq) 1194views11rank4comments
Multiple ChoiceWhat is the oxidizing agent in the following reaction? 3 PbO (s) + 2 NH3 (aq) → N2 (g) + 3 H2O (l) + 3 Pb (s)250views
Textbook QuestionIn the Brønsted–Lowry concept of acids and bases, acid– base reactions are viewed as proton-transfer reactions. The stronger the acid, the weaker is its conjugate base. If we were to think of redox reactions in a similar way, what particle would be analogous to the proton? Would strong oxidizing agents be analogous to strong acids or strong bases? [Sections 20.1 and 20.2]1038views
Textbook QuestionIdentify the element that gets oxidized and the oxidizing agent in the reaction. (LO 4.19) (a) (b) (c) (d)371views
Textbook QuestionIndicate whether each of the following statements is true or false: (c) If there are no changes in the oxidation state of the reactants or products of a particular reaction, that reaction is not a redox reaction.720views
Textbook QuestionIndicate whether each of the following statements is true or false: (a) If something is oxidized, it is formally losing electrons.566views
Textbook QuestionIndicate whether each of the following statements is true or false: (c) An oxidizing agent is needed to convert CO into CO2.642views
Textbook QuestionHydrazine 1N2H42 and dinitrogen tetroxide 1N2O42 form a self-igniting mixture that has been used as a rocket propellant. The reaction products are N2 and H2O. (c) Which substance serves as the reducing agent and which as the oxidizing agent?984views
Textbook QuestionTrue or false: (a) If a substance is oxidized, there must be more oxygen in the substance.1072views1rank
Textbook QuestionTrue or false: (a) Reduction occurs if the oxidation number of an element increases975views
Textbook Question(a) Which region of the periodic table shown here contains elements that are easiest to oxidize? (b) Which region contains the least readily oxidized elements?1327views
Textbook QuestionWhich element is oxidized, and which is reduced in the following reactions? (c) Cl21aq2 + 2 NaI1aq2¡I21aq2 + 2 NaCl1aq2708views
Textbook QuestionWhich element is oxidized, and which is reduced in the following reactions? (b) 3 Fe1NO3221aq2 + 2 Al1s2¡3 Fe1s2 + 2 Al1NO3231aq21587views
Textbook QuestionWhich element is oxidized, and which is reduced in the following reactions? (a) N21g2 + 3 H21g2¡2 NH31g2452views
Textbook QuestionWhich of the following are redox reactions? For those that are, indicate which element is oxidized and which is reduced. For those that are not, indicate whether they are precipitation or neutralization reactions. (a) P41s2 + 10 HClO1aq2 + 6 H2O1l2¡ 4 H3PO41aq2 + 10 HCl1aq2641views
Textbook QuestionConsider the following substances: Fe(s), PbO2(s), H+(aq), Al(s), Ag(s), Cr2O72-(aq). (a) Look at the E° values in Appendix D, and classify each substance as an oxidizing agent or a reducing agent. 437views
Textbook QuestionThe following cell reactions occur spontaneously: (a) Arrange the following reduction half-reactions in order of decreasing tendency to occur:363views
Textbook QuestionThe following cell reactions occur spontaneously: (b) Which of these substances (A,A+,B,B+,C,C+) is the strongest oxidizing agent? Which is the strongest reducing agent?563views
Textbook QuestionWhat reaction can occur, if any, when the following experiments are carried out under standard-state conditions? (d) A nickel wire is dipped into an aqueous solution of HClO.298views
Textbook QuestionWhat reaction can occur, if any, when the following experiments are carried out under standard-state conditions? (c) Chlorine gas is bubbled through aqueous H2C2O4.337views
Textbook QuestionWhat reaction can occur, if any, when the following experiments are carried out under standard-state conditions? (b) A strip of lead is dipped into an aqueous solution of AgNO3.321views
Textbook QuestionWhat reaction can occur, if any, when the following experiments are carried out under standard-state conditions? (a) Oxygen gas is bubbled through an acidic solution of Cr(NO3)3.460views
Textbook QuestionWhat reaction can occur, if any, when the following experiments are carried out under standard-state conditions? (b) An acidic solution of FeSO4 is exposed to oxygen.330views
Textbook QuestionWhat reaction can occur, if any, when the following experiments are carried out under standard-state conditions? (d) Hydrogen gas is bubbled through aqueous Cd(NO3)2.332views
Textbook QuestionWhat reaction can occur, if any, when the following experiments are carried out under standard-state conditions? (c) A silver wire is immersed in an aqueous solution of NiCl2.313views
Textbook QuestionWhat reaction can occur, if any, when the following experiments are carried out under standard-state conditions? (a) A strip of zinc is dipped into an aqueous solution of Pb(NO3)2.345views
Textbook QuestionWrite equations for the half-reactions that occur in the electrol- ysis of molten potassium bromide.1513views1rank
Textbook QuestionConsider a galvanic cell that uses the following half-reactions: (b) What is the oxidizing agent, and what is the reducing agent?.864views
Textbook QuestionThe accompanying photo shows the reaction between a solution of Cd(NO3)2 and one of Na2S. (d) Is this a redox reaction?298views
Textbook QuestionThe commercial production of nitric acid involves the following chemical reactions: 4 NH3(g) + 5 O2(g) → 4 NO(g) + 6 H2O(g)2 NO(g) + O2(g) → 2 NO2(g)3 NO2(g) + H2O(l) → 2 HNO3(aq) + NO(g) (b) Identify the element undergoing oxidation and the element undergoing reduction. 3 NO2(g) + H2O(l) → 2 HNO3(aq) + NO(g) 358views
Textbook QuestionThe commercial production of nitric acid involves the following chemical reactions: 4 NH3(g) + 5 O2(g) → 4 NO(g) + 6 H2O(g)2 NO(g) + O2(g) → 2 NO2(g)3 NO2(g) + H2O(l) → 2 HNO3(aq) + NO(g) (a) Which of these reactions are redox reactions?638views
Textbook QuestionDetermine whether each reaction is a redox reaction. For each redox reaction, identify the oxidizing agent and the reducing agent. c. Pb(NO3)2(aq) + Na2SO4(aq)¡PbSO4(s) + 2 NaNO3(aq) d. HBr(aq) + KOH(aq)¡H2O(l ) + KBr(aq)906views
Textbook QuestionDetermine whether each reaction is a redox reaction. For each redox reaction, identify the oxidizing agent and the reducing agent. a. 4 Li(s) + O2( g)¡2 Li2O(s) b. Mg(s) + Fe2 + (aq)¡Mg2 + (aq) + Fe(s)2093views
Textbook QuestionDetermine whether each reaction is a redox reaction. For each redox reaction, identify the oxidizing agent and the reducing agent. a. Al(s) + 3 Ag+ (aq)¡Al3 + (aq) + 3 Ag(s) b. SO3( g) + H2O(l )¡H2SO4(aq) c. Ba(s) + Cl2( g)¡BaCl2(s) d. Mg(s) + Br2(l )¡MgBr2(s)485views
Textbook QuestionGold exists in two common positive oxidation states, +1 and +3. The standard reduction potentials for these oxidation states are Au+1aq2 + e- ¡ Au1s2 Ered ° = +1.69 V Au3+1aq2 + 3 e- ¡ Au1s2 Ered ° = +1.50 V (c) Miners obtain gold by soaking gold-containing ores in an aqueous solution of sodium cyanide. A very soluble complex ion of gold forms in the aqueous solution because of the redox reaction 4 Au1s2 + 8 NaCN1aq2 + 2 H2O1l2 + O21g2 ¡ 4 Na3Au1CN2241aq2 + 4 NaOH1aq2 What is being oxidized, and what is being reduced in this reaction?1849views
Textbook QuestionDisulfides are compounds that have S ¬ S bonds, like peroxides have O ¬ O bonds. Thiols are organic compounds that have the general formula R ¬ SH, where R is a generic hydrocarbon. The SH- ion is the sulfur counterpart of hydroxide, OH-. Two thiols can react to make a disulfide, R ¬ S ¬ S ¬ R. (c) If you react two thiols to make a disulfide, are you oxidizing or reducing the thiols?441views
Textbook QuestionAqueous solutions of ammonia 1NH32 and bleach (active ingredient NaOCl) are sold as cleaning fluids, but bottles of both of them warn: 'Never mix ammonia and bleach, as toxic gases may be produced.' One of the toxic gases that can be produced is chloroamine, NH2Cl. (e) Is N oxidized, reduced, or neither, upon the conversion of ammonia to nitrogen trichloride?341views
Textbook QuestionWhere in the periodic table are the best reducing agents found? The best oxidizing agents?585views
Textbook QuestionWhere in the periodic table are the most easily reduced elements found? The most easily oxidized?1114views
Textbook QuestionPotassium superoxide, KO2, is often used in oxygen masks (such as those used by firefighters) because KO2 reacts with CO2 to release molecular oxygen. Experiments indicate that 2 mol of KO21s2 react with each mole of CO21g2. (b) Indicate the oxidation number for each atom involved in the reaction in part (a). What elements are being oxidized and reduced?974views
Textbook QuestionIn each of the following instances, tell whether the substance gains electrons or loses electrons in a redox reaction. (a) An oxidizing agent (b) A reducing agent (c) A substance undergoing oxidation (d) A substance undergoing reduction743views
Textbook QuestionTell for each of the following substances whether the oxidation number increases or decreases in a redox reaction. (a) An oxidizing agent (b) A reducing agent (c) A substance undergoing oxidation (d) A substance undergoing reduction706views
Textbook QuestionWhich element is oxidized and which is reduced in each of the following reactions? (b)266views
Textbook QuestionWhich element is oxidized and which is reduced in each of the following reactions? (a)516views
Textbook QuestionWhich element is oxidized and which is reduced in each of the following reactions? (b)931views
Textbook QuestionWhich element is oxidized and which is reduced in each of the following reactions? (a)385views
Textbook QuestionTreatment of gold metal with BrF3 and KF produces Br2 and KAuF4, a salt of gold. Identify the oxidizing agent and the reducing agent in this reaction.892views
Open QuestionA substance with the potential to cause reduction in another substance is __________.166views
Open QuestionA substance with the potential to cause oxidation in another substance is __________.166views
Open QuestionWhich of the following is true about a redox reaction? In a redox reaction, the reducing agent loses electrons. In a redox reaction, the oxidizing agent loses electrons. In a redox reaction, the oxidized species gains electrons. In a redox reaction, the reduced species loses electrons.220views
Open QuestionIdentify the oxidizing agent and the reducing agent for 4Li(s) + O2(g) → 2Li2O(s)161views
Open QuestionWhat element is being reduced in the following redox reaction? Cr(OH)4-(aq) + ClO-(aq) → CrO42-(aq) + Cl-(aq)215views
Open QuestionWhich element is reduced in this reaction? 2KMnO4 + 3Na2SO3 + H2O → 2MnO2 + 3Na2SO4 + 2KOH183views
Open QuestionA chemical reaction that has the general formula of AB → A + B is best classified as what type of reaction?164views
Open QuestionWhich of the following statements is true about the reaction between zinc and copper sulfate?271views1rank
Open QuestionIdentify the oxidizing agent and the reducing agent for 4Li(s) + O2(g) → 2Li2O(s).163views
Open QuestionWhich of the following is true about a redox reaction? In a redox reaction, the reducing agent loses electrons. In a redox reaction, the oxidizing agent loses electrons. In a redox reaction, the oxidized species gains electrons. In a redox reaction, the reduced species loses electrons.429views
Open QuestionThe presence of which reactant is the best indicator of an oxidation-reduction reaction?176views
Open Questionin a reaction, a molecule loses an electron. this is an example of which type of reaction?148views
Open QuestionUse the information in the aleks data tab to sort the following chemical species by reducing power.163views
Open QuestionIn the reaction shown below, which substance is oxidized? 2 Cr(s) + Fe2O3(aq) → Cr2O3(aq) + 2 Fe(s)133views