1. Provide the oxidation number for each of the underlined elements in following compounds or ions:...
Part A. Which of the following is not a redox reaction? H2O(l) + NH3(g) NH4+(aq) + OH–(aq) 2H2(g) + O2(g) 2H2O(l) Zn(s) + H2SO4(aq) ZnSO4(aq) + H2(g) FeSO4(aq) + K2Cr2O7(aq) + 7H2SO4(aq) Cr2(SO4)3(aq) + 3Fe2(SO4)3(aq) + K2SO4(aq) + 7H2O(l) Cl2(g) + 2KBr(aq) Br2(l) + 2KCl(aq) Part B. A 43.46 mL sample of Na2SO3 was titrated with 68.99 mL of 0.128 M K2Cr2O7 solution in the presence of H2SO4. Calculate the molarity of the Na2SO3 solution. Enter to 3 decimal...
For the following, assign oxidation numbers. Which species is oxidized and which is reduced? Which species is the oxidizing agent and which is the reducing agent? (A) Zn(s) + CuCl2(aq) Cu(s) + ZnCl2 (B) MnO2 (s) + 4H+(aq) + 2Cl-(aq) Mn2+(aq) + 2H2O(l) + Cl2(g) (C)Zn(s) + 2HCl(aq)ZnCl2(aq) + H2(g)
Which of the following is true concerning the following reaction? 2Cl-(aq) + F2(g) → Cl2(g) + 2F-(aq) Group of answer choices Cl-(aq) is reduced and is the oxidizing agent and F2(g) is oxidized and is the reducing agent. Cl-(aq) is oxidized and is the reducing agent and F-(aq) is reduced and is the oxidizing agent. Cl2(g) is oxidized and is the reducing agent and F2(g) is reduced and is the oxidizing agent. Cl-(aq) is...
POST-LAB QUESTIONS (Students must answer all the post-lab questions in this section) 1. For the following reactions identify: a) 2 Al(s) + 3Cl2(g) 2 AlCl3(s) Substance oxidized: Substance reduced: Oxidizing agent: Reducing agent: b) 8H(aq) + MnO4(aq) + 5Fe2(aq) -5Fe3+ (aq) + Mn2+ (aq) + 4H2O(1 Substance oxidized: Substance reduced: Oxidizing agent: Reducing agent: c) FeS(s) + 3NO3(aq) + 4H*(aq) 3NO(g) + SO42(aq) + Fe (aq) + 2H2O(1) Substance oxidized: Substance reduced: Oxidizing agent: Reducing agent: d) Zn(s) + 2HCl(aq)...
This question has multiple parts. Work all the parts to get the most points. Specify which of the following are oxidation-reduction reactions, and if it is, identify the oxidizing agent, the reducing agent, the substance being oxidized, and the substance being reduced. If it is not, select No and leave the following boxes blank. Express your answers as a chemical formulas. Omit states-of-matter. Zn(s)+2Ag (aq)2 Ag(a) +Zn2+ (aq) Redox? Oxidizing Agent Reducing Agent Substance Oxidized Substance Reduced HBr(g) +NH, (g)NH4Br(s)...
for the reaction in question 5, list those elements which have changed oxidation number during the reaction, showing the oxidation number before and after the reaction. Which element is oxidized? Which is reduced? Which is the oxidizing agent? Which is the reducing agent? How many electrons are transferred per sulfur atom? How many totally in the reaction as shown? 5. Balance the following equation: Cl2 + K2S2O3 + KOH KCI + K2SO4 + H20
25. What is the oxidation number of the indicated element in each of the following species? A. ClinCl2is+2 Cr in K2Cr2O7 is +2 NinNO3-is+3 B. Cl in Cl2 is 0 Cr in K2Cr2O7 is +6 N in NO3- is +6 C.ClinCl2 is+7 Cr in K2Cr2O7 is +3 NinNO3-is-2 D. ClinCl2 is0 Cr in K2Cr2O7 is +6 NinNO3-is+5 E. ClinCl2is-1 Cr in K2Cr2O7 is +2 N in NO3- is -3 26. Which of the following statements is correct about the reaction...
Redox Equations Which of the following reactions are redox reactions? Identify the substance oxidized, the substance reduced, the oxidizing agent, the reducing agent. 1.2 Mg(s) + O2(g) → 2 MgO (s) 2. H SO. (aq) + Al(OH) (aq) → Al(SO.) (aq) + H,O (1) 3. 2 Na (s) + H2O (1) ► 2 NaOH(aq) + H2(g) 4. Cao (s) + CO2(g) → Caco, (s) 5. AgNO, (aq) + NaCl (aq) ► AgCl(s) + NaNO, (aq) Identify the substance oxidized, the...
No handwritten answer, Only typewriting please 1. Answer the following: a) Balance the following oxidation-reaction reaction using the half reaction method. Identify each half reaction as reduction or oxidation, and identify in each overall reaction the oxidizing agent and the reducing agent. Cl-(aq) + MnO4-(aq) ⇒ Cl2(g) + MnO2(s) (acidic) Oxidizing agent = reducing agent = (b) Consult the table of reduction potentials in Chapter 19 or Appendix II of your text to determine which of the following species can...
homlosid Give the oxidation number of chlorine in each of the following substances: CIF 1. CIO, NaCIO MgCl; ОСЬ CЬ NaCl Give the oxidation number of manganese in each of the following substances: KMnO 2. 1- MnO MnO2 MnO Mn MnO3 MnSO Balance the following equation: 3. KMnO4+ Nal + H2SO4 12+ MnSO4+ Na;SO4+ K2SO4 + HO For the reaction in question 3, list those elements which have changed oxidation number during the 4. reaction, showing the oxidation number before...