Finish balancing the reduction reaction 8.What is wrong with the REDOX reaction 2 Cr+2 Br'Cl+Br2 Nothing Nothing is being oxidizd Nothing is being redueed Chloride cn not be oxidized Bromide can not be oxidize 9.When the balanced reaction 2 MnO+SOs+H2O=2 MnO2+O2+2 H'is changed to be balanced in basic solution,the result is: C2Mn0s+S0,2=2Mn0:2+S0:2+H0 C2Mn0+S02+20H=2Mn02+S0,2+H0 C2Mn0:+S02=2Mn0:2+S0:2+H0+20H C2Mn0r+S0,2+H0=2Mn0,2+s0,2+2H+20F C2Mn04+s02+20H=2Mn02+S042+H0+20H 10.What are the oxidation numbers of the V,O and Cl atoms in VOCls? 口5,2,1 口-5，+2,1 口+5,2+1 C+4,-1,-1 口+5,2,1 Answer: Question 1. For a monoatomic ion,the oxidation number equals the charge (+2 in this case). Question 2
Finish balancing the reduction reaction 8. What is wrong with the REDOX reaction 2 Cl- + 2 Br - Cl 2 + Br2 ? Nothing Nothing is being oxidized Nothing is being reduced Chloride can not be oxidized Bromide can not be oxidized 9. When the balanced reaction 2 MnO4 - + SO3 -2 + H2O = 2 MnO 4 -2 + SO4 -2 + 2 H+ is changed to be balanced in basic solution, the result is: 2 MnO4 - + SO3 -2 = 2 MnO4 -2 + SO4 -2 + H2O 2 MnO4 - + SO3 -2 + 2 OH- = 2 MnO4 -2 + SO4 -2 + H2O 2 MnO4 - + SO3 -2 = 2 MnO4 -2 + SO4 -2 + H2O + 2 OH- 2 MnO4 - + SO3 -2 + H2O = 2 MnO4 -2 + SO4 -2 + 2 H+ + 2 OH- 2 MnO4 - + SO3 -2 + 2 OH- = 2 MnO4 -2 + SO4 -2 + H2O + 2 OH- 10. What are the oxidation numbers of the V, O and Cl atoms in VOCl3? -5, -2, -1 -5, +2, -1 +5, -2, +1 +4, -1, -1 +5, -2, -1 Answer: Question 1. For a monoatomic ion, the oxidation number equals the charge (+2 in this case). Question 2. 6
The oxygens are each-2,thus the Br is+5. Question 3. This is a disproportionation reaction.The C12 is both oxidized and reduced. Question 4. I gets oxidized,Ngets reduced Question 6. The atoms are all balanced.Thus,balance the charge by adding 2 electrons to the right side. Question 7. To balance the charge,multiply the oxidation half reaction by 2 and the reduction half reaction by 3. Question 8. Both Cl-and Br-are being oxidized Question9. The result is 2 Mn04-+SO3-2 +2 OH-=2 Mn04-2+S04-2 H20 Question 10. Vanadium is+5,oxygen is-2(as usual)and Cl is-1. Part3 1.A Galvanic cell: chemicalreaction
The oxygens are each -2, thus the Br is +5. Question 3. This is a disproportionation reaction. The Cl2 is both oxidized and reduced. Question 4. I gets oxidized, N gets reduced. Question 6. The atoms are all balanced. Thus, balance the charge by adding 2 electrons to the right side. Question 7. To balance the charge, multiply the oxidation half reaction by 2 and the reduction half reaction by 3. Question 8. Both Cl- and Br- are being oxidized. Question 9. The result is 2 MnO4- + SO3-2 + 2 OH- = 2 MnO4-2 + SO4-2 + H2O Question 10. Vanadium is +5, oxygen is -2 (as usual) and Cl is -1. Part 3 1. A Galvanic cell: Has a spontaneous chemical reaction 7