What is the reaction at the anode in nickel-cadmium battery? Recall the total re

Question

What is the reaction at the anode in nickel-cadmium battery? Recall the total reaction is Cd(s) + NiO_2 + 2H_2O(l) rightarrow Cd(OH)_2(s) + Ni(OH)_2(s) A) Nickel(II) hydroxide is produced. B) Cadmium is reduced. C) Cadmium is oxidized. D) Nickel is oxidized. E) Nickel is reduced. 25) In an electrochemical cell Q = 0.010 and K = 855. What can you conclude about E_cell and E_cell degree A) E_cell is positive and E_cell degree is negative. B) E_cell is positive and E_cell degree is positive. C) E_cell is negative and E_cell degree is negative. D) E_cell is negative and E_cell degree is positive. E) None of the above. 26) A battery is considered "dead" when the cell potential is zero and A) Q=K B) Q=1 C) Q>1 D) Q

Explanation / Answer

Question 24. Answer: (C) Cadmium is oxidized

Question 25. Answer: (B) Ecell is positive and E°cell is positive

Question 26. Answer: (A) Q=K

Question 27. Answer: (C) [Ni2+] increases at he anode

Question 28. Answer: (A) 2H2O+2e--->H2+2OH-

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