roach these Question 41 Which of the following statements is the best explanation for a metal electrode increasing in mass in an electrochemical cell?...

How approach these

Question 

41

Which of the following statements is the best explanation for a metal electrode increasing in mass in an electrochemical cell?

Select one:

A) Reduction is occurring at the cathode.

B) Oxidation is occurring at the cathode.

C) Oxidation is occurring at the anode.

D) Reduction is occurring at the anode.

Question 

42

What is the E° value for an electrolytic cell consisting of aqueous magnesium nitrate?

Select one:

A) - 0.40 V

B) - 3.20 V

C) - 3.60 V

D) - 2.06 V

Question 

43

Use the following information to answer the next question.

The operation and recharging of the nickel-cadmium battery involves two reversible half-reactions.

Cd(s)+2OH−(aq)→Cd(OH)2s)+2e−

2Ni(OH)2(s)+2OH−(aq)→NiO(OH)(s)+2H2O(l)+2e−

When a Ni-Cad battery is used to run a CD player, the anode reaction is

Cd(s)+2OH−aq)→Cd(OH)2(s)+2e−

What is the cathode half-reaction when a Ni-Cad battery is used to run a CD player?

Select one:

A) 2NiO(OH)(s)+2H2O(l)+2e−→2Ni(OH)2(s)+2OH−(aq)

B) Cd(s)+2OH−(aq)→Cd(OH)-(s)+2e−

C) Cd(OH)2(s)+2e−→Cd(s)+2OH−(aq)

D) 2Ni(OH)2(s)+2OH−aq)→+2NiO(OH)(s)+2H2O(l)+2e−