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1. Thirty minutes (30 m) of electrolysis of a solution of CuSO4 produced 3.75 g of Cu at the cathode. Which of the following is true ? At Wt Cu=63.5 g/mol Eocell= 0.340 V pls explain why it became the answer. a. Less than 30 mins is needed to produce 4 g of Cu at the cathode b. 0.300 volts is enough to start electrolysis. c. The total current used is 6.33 amp.

1. Thirty minutes (30 m) of electrolysis of a solution of CuSO4 produced 3.75 g of Cu at the cathode. Which of the following is true ? At Wt Cu=63.5 g/mol Eocell= 0.340 V pls explain why it became the answer. a. Less than 30 mins is needed to produce 4 g of Cu at the cathode b. 0.300 volts is enough to start electrolysis. c. The total current used is 6.33 amp.

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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1. Thirty minutes (30 m) of electrolysis of a solution of CuSO4 produced 3.75 g  of Cu at the cathode.  Which of the following is true ? At Wt Cu=63.5 g/mol     Eocell= 0.340 V

pls explain why it became the answer.

a. Less than 30 mins is needed to produce 4 g of Cu at the cathode

b. 0.300 volts is enough to start electrolysis.

c. The total current used is 6.33 amp.

2. 

 Given :                                             Ecell

Mg2+(aq)  + 2 e- -> Mg(s)            Mg2 + |Mg  = - 2.372

Sn4+(aq) + 2 e- -> Sn2+(aq)        Sn2 + , Sn4 + |Pt = + 0.154

 

Cl2 (g) + 2 e- ->  2 Cl-(aq)              Cl-| Cl2 |Pt = +1.36

 

Which of the following is best reducing agent  for Cl2(g) ?

a.Sn4+(aq)
b.Mg2+(aq )
c.Mg(s)
d.Sn2+(aq)

 

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