Which of the following statements are true about the voltaic cell pictured above

Question

Which of the following statements are true about the voltaic cell pictured above at 25 degree C? i. The zinc electrode serves as the anode. ii. As drawn, the electrons would move through the wire from the zinc compartment to the nickel compartment. iii. The nickel electrode would gain mass as the reactions proceeds. iv. At equilibrium, E_cell degree = 0. v. In the salt bridge, Na^+ ions move towards the zinc compartment and NCV ions move toward the nickel compartment. A i and ii B. i, ii, and iv C. ii, iii, and v D i, ii, and iii E. All of the above are true What is the E_cell degree of the voltaic cell pictured above at 25 degree C? A. 1 043 V B. 0.582 V C 0.483 V D. -1 043 V E. 0.831 V What is of the voltaic cell pictured above at 25 degree C? A. 0.927 V B 0.367 V C. 0.598 V D. 0.252 V E. 0.00 V

Explanation / Answer

Ans 23 D. i .ii. and iii

Zn has lower standard electrode potential than nickel so it behaves as anode and nickel electrode is cathode.

The electrons in such a cell always move from anode to cathode such that more amount of Zn dissolves in the solution and Zn electrodes get thinner and nickel deposits at the cathode making it thicker.

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