13,14,15,16 please explain answer lution in the cell 13. The salt bridge found i

Question

13,14,15,16
please explain answer

lution in the cell 13. The salt bridge found in many electrochemical cells is needed to A. transfer ions from one half cell to the other B. carry electrons between the cathode and anode C. insulate the two electrodes. D, allow the electrolyte solution of siphon from one side of the cell to the other so the levels remain equal E. none of the above 14. In a voltaic cell REDUCTION occurs at the A. anode B cathode C salt bridge D. negative electrodeE voltmcter IS. A voltaic cell is represensed as: Zn(sXZn (1.0 MNKuO MCws) Which of dhe following statements is FALSE? AThe mass of the zinc electrode increases during discharge B. The copper electrode is the cathode C. Electros flow thohhcircuit from the rinc eectroto the copper electroude D, Reduction occurs at the copper electrode during discharge E. The concentration of Cu" decreases during discharge. 16. The following two half-reactions are involved in a galvanic cell. At standard condations, what specics are produced at each electrode? A. Ag is prodaced at the cathode and Ni at the anode B. Ag is produced at the cathode nd Ni2" at the anode C. Ag' is produced at the anode and Ni at the cathode D. Ag. is produced at the aide and Nal the cathode. E. none of these is correct

Explanation / Answer

13.

the salt bridge elps ions to move, those have charges such as + and -.

Since electrons are flowig trough the wire, the charges need to realocate in order to maintain neutral charges

14.

reduction is gain of electrons --> this happens in cathode

15.

The zinc electrode will reduce! since it will become ions in water!

16.

most positive ->redues in cathode; then silver

most negative -> oxidizes in anode, that is nickel

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