02 Question (3 points) a See page 778 The particulate model below represents the

Question

02 Question (3 points) a See page 778 The particulate model below represents the redox reactions that produce energy from fuel cells. Use the model to answer the following questions. 3rd attempt Part 1 (1point) See Periodic Table See Hint Part 2 (1 point) 9 See Hint Write a balanced half-cell equation for the reaction occurring at the cathode. Ignore phases in the reaction. X X. He5 Part 3 (1point) 9 See Hint Assuming excess oxygen, how many moles of electrons would be transferred if 11 moles of H2 were reacted moles of electrons 025 11 OF 15 QUESTIONS COMPLETED VIEW SOLUTION SUBMIT ANSWER

Explanation / Answer

part 1)

anode reaction :    H2 ---------------> 2H++ 2e-

part 2)

cathode reaction :

O2 + 4H+ + 4e- ----------------> 2H2O

overall reaction

2H2 + O2 --------------------> 2H2O

2 mole H2----------------------> 4 mol electrons

11 moles of H2 ---------------> 4 x 11 / 2 = 22 mole electrons

number of moles of electrons = 22

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