Question 6 4 pts Which of these chemical equations does not describe a redox reaction? (4...
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...
Predict the products of the following reactions and balance the chemical equations. 1. Synthesis Reactions a) 2Na(s) + Cl2(g) → 2NaCl (s) b) 3Mg(s) + N2(g) → Mg3N2 (8) 2. Decomposition Reactions a) 2HgO(s) → 2Hg (s)+ O2(g) b)Li2O(s)2Li (g)+ 0-2 (g) 3. Single Displacement Reactions a) Al(s) + Pb(NO3)2 (aq) → Al(NO3)2 + Pb b) Ca(s) + HNO3(aq) → 4. Double Displacement Reactions Remember to include state symbols to show if a precipitate forms. a) CaCl2(aq) +_ Li2SO4(aq) →...
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...
Balance the following chemical equations. Write the word "Balanced" if the equation is already balanced. a) 2 H2(g) + O2(g) → 2 H20(1) b) 2NH3(g) + H2SO4(90) → (NH4)2SO4(94) Decomposition Reactions a) 2H2O2(0) → 2 H2O(l) + O2(g) b) "Balanced" CaCO3(s) → "Balanced" CaQ/s) + "Balanced" CO2(g) Single Displacement Reactions a) Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g) b) 2Nas) + 2H2O(1) ► 2NaOH(aq) + H2(g double Displacement Reactions a) AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq) “Balanced" b) H2SO4(aq)...
For each chemical reaction listed in the table below, decide whether the highlighted atom is being oxidized, reduced, or none. 1.) N2(g) +3H2(g)= 2NH3(g) 2.) 2Cl-(aq) +2H2O(l)= 2OH-(aq) +H2(g) +Cl2(g) 3.) H2S(aq) + 2NaOH(aq)= Na2S(aq) + 2H2O(l) 4.) CH4(g) +2H2O(g)= 4H2(g) + CO2(g)
lructions Ondus LockDown! Question 19 Which of the following represents an acid-base neutralization reaction? SO2(g) + H20(1) -- H2SO3(8) OLIOH(aq) + HNO3(aq) --- LINO3(aq) + H20(1) 2KBr(aq) + Ciz() - 2Cl(aq) + Br20) CaBrzlag) + H250 lag) - CaSO4(s) + 2HBr(e) 2Al(s) + 3H_SO (ad) - Al2(SO4)3(aq) + 3H2(g) revious
Short Answer: (4 points each) 1.) Predict whether the entropy change is positive or negative for each of the following reactions. GIVE YOUR REASON FOR YOUR PREDICTIONS a) 2KC1O4(s) → 2KCIO3() + O2(8) b) H2O → H2O) c) 2Na(3) + H2O → 2NaOH(aq) + H2() d) N2(g) → 2N) 2.) State whether the sign of the entropy change expected for each of the following processes will be positive or negative, and EXPLAIN YOUR PREDICTIONS. a) PC130) + Cl2(e) → PCls(s)...
10. How many moles of H2SO4 are there in 98 g of H2SO4? NO(g) 11. Balance each of the following chemical equations: Nz(g) + 02(8) Fe(s) + O2(g) Fe2O3(s) Na(s) + Cl2(g) NaCl(s) Ca(s) Brz(1) CaBr(s) + Pa(s) + + O2(g) P4010(s) NH3(g) N2(g) + Hz(8) 12. Classify each of the following as a combination, decomposition, single replacement, double replacement, or combustion reaction: Type of reaction Equation of the chemical reaction Cuo(s) + 2HCl(aq) → CuCl(aq) + H2O(1) 2A1,03(s) >...
3 .Which one of the following reactions is a redox reaction? 1. 2Al(s) + 2KOH(aq) + 6H2O(l) → 2KAl(OH)4(aq) + 3H2(g) 2. Pb(NO3)2(aq) + 2HCl(aq) → PbCl2(s) + 2HNO3(aq) 3. Zn(OH)2(aq) + H2SO4(aq) → ZnSO4(aq) + 2H2O(l)
16. Determine the oxidation state and the coordination number of the metal ion in the following coordination compound: [Co(H20)4(NH3)(OH)]Ch Oxidation number Coordination number 17. Use the redox table below to answer the following questions: Which is the weakest reducing agent in the table? Which is the strongest oxidizing agent in the table? Name the elements or ions that can be oxidized by Pb2* ETV) Half Reaction +2.87 F2 (g) + 2e-→ 2F-(aq) +1.359 Cl2(g)2 2Cl- (aq) Br20) 22Br (ag) O2(8)...