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10. Which of the following represents a balanced redox reaction for the following in acidic conditions? Cd(s)+NO3(aq)Cd2(aq)+NO(s) a. Cd(s)+NO3(aq)Cd2(aq)+NO(g)+2H2O b. 4H+Cd(s)+NO3(aq)Cd2(aq)+NO(s)+2H2O c. 4H+Cd(s)+NO3(aq)+2eCd2(aq)+NO(g)+2H2O d. 8H++3Cd(s)+2NO3(aq)3Cd2+(aq)+2NO(g)+4H2O(el) e. 8H+3Cd(s)+3NO3(aq)3Cd2(aq)+3NO(g)+4H2O(cl) 11. What is the change in oxidation number of an atom of chromium in the following haif-reaction? CrO32(aq)Cr2O72(aq) a. an decrease of 1 b. a increase of 1 c. an decrease of 2 d. a increase of 2 e. an decrease of 3 12. How many electrons are transferred in the following balanced redox reaction? 5NO2(aq)+6H++2MnO4(aq)5NO3(aq)+2Mn2+(aq)+3H2O(el) a. 2 b. 4 c. 6 d. 8 e. 10 Part B - Short Answer and Problem Solving (18 marks): Instructions: Write your answers to each question in the space provided. Show your work for all solutions. 1. For the following reaction, write the hall-reactions, stating which is the reduction half-reaction and which is the oxidation hatf-reaction. (2 marks) 2H+H2O2(el)+2I(ae)I2(s)+2H2O(el) 2. Assign oxidation numbers and identify the change in oxidation numbers for chlorine and arsenic for the given reaction. ( 2 marks) ClO3(aq)+As2S3Cl(aq)+H2AsO4(aq)+SO42(aq)