Answer Happy

Question 48 1 pts For the redox reaction 2Fe2+ + Cl2 → 2Fe3+ + 2Clwhich of the following are the correct half- reactions? 1. Cl2 + 2e → 201 II. CICI + e III. Cl2 → 2C1" + 2e IV. Fe2+ - Fe3+ + e- V. Fe2+ + e + Fe3+ O I and IV O I and V II and IV none of these Oll and V

U Question 49 1 pts Given the following reaction in acidic media: Fe2+ +Cr 0,2-Fe + + Balance the chemical reaction in acid, the coefficient for water in the balanced reaction is: 07 5 0.3 none of these Question 50 1 pts In voltaic cells, such as those diagrammed in your text, the salt bridge drives electrons from one half-cell to the other O none of these allows charge balance to be maintained in the cell O acts as a mechanism to allow mechanical mixing of the solutions O is not necessary in order for the cell to work CE O 38 Š & 7 5 6 8 00 9 R T

Question 51 O pts The anode in a voltaic cell and in an electrolytic cell is O the site of reduction and of oxidation, respectively the site of oxidation in both cells none of these o positive in both cells the site of oxidation and of reduction, respectively Question 52 O pts Which of the following statements about galvanic cells is false? Galvanic cells are spontaneous reactions, all are true Electrons flow from the cathode to the anode. The half-reactions take place in separate cells. A salt bridge maintains electrical contact and charge neutrality in the half-cells. SD < 0 8 7 5 6 8 R T Y

Question 53 O pts Which of the following is true for a reaction that is spontaneous as written? O AG > 0:0 O AG00 AGO E O AG' < 0: EC0 none of these D Question 54 O pts How many grams of metallic nickel can be produced by the electrolysis of aqueous nickel(II) chloride, NiCla, with a 0.504 ampere current for 5.00 hours? O 2.768 O none of these 1.92 g 3.838 1.198 DI LAS BRO . 8: 5 6 7 8 9 R T Y