In Season 2 of Breaking Bad, Jesse and Heisenberg end up stranded in the desert

Question

In Season 2 of Breaking Bad, Jesse and Heisenberg end up stranded in the desert because the battery of the RV is dead. Walter builds a homemade battery to jumpstart the engine. He uses brake pads that contain mercuric oxide (HgO) and galvanized steel which is a source of Zn metal. The electrolyte he uses is KOH. Relevant data can be found in Appendix B. (Pictures below)
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b. Silver can be elect What marestion 5 . In Season 2 of Breaking Bad, Jesse and Heisenberg end up stranded in the desert because the battery of the RV is dead. Walter builds a homemade battery to jumpstart the engine. He uses brake pads that contain mercuric oxide (HgO) and galvanized steel which is a source of Zn metal. The electrolyte he uses is KOH Relevant data can be found in Appendix B. i. Write down the relevant half reactions. (2 points) ii. What is the overall spontancous electrochemical reaction? (2 points) 20o)+ 2.nts iii. Calculate the standard potential for this reaction. (2 points) E'cell Ered Eox Bont iv. If the pH of the electrolyte is 12 and the concentration of zinc ions is 0.01 M what is the cell potential? (4 What points)

Explanation / Answer

Answer – IV, b) We are given, current = 6.8 A , time , t = 72 min

Reaction – Ag+(aq) + e? -----> Ag(s)

Calculation of charge – we know the formula for the electric charge

Electric charge = current (A) * time (s)

Convert the time , min to s

We know

1 min = 60 s

So, 72 min = ?

= 4320 s

So, Electric charge = 6.8 A * 4320 s

                               = 29376 C

Calculation of moles of electrons-

We know,

96485 C = 1 moles of electrons

So, 29376 C = ?

= 0.304 moles of electrons

For the electroplating of Ag there is one moles of electrons required

So, 1 moles of electrons = 1 moles of Ag

So, 0.304 moles of electrons = ?

= 0.304 moles of Ag

Mass of Ag = 0.304 moles * 107.87 g/mol

                    = 32.8 g

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