Answer to Question #286333 in Physical Chemistry for Double

Question

Topic: Electrode Potential and Electrochemical Cells

question 1

The diagram below shows the experiment setup for a typical electrochemical cell that contains two standard half cells. The cell operates according to the reaction represented by the following equation

Zn(s) + Ni²⁺ (aq) —> NI(s) + Zn²⁺ (aq)

a) identify M and M²⁺ in the diagram? ( marks)

b) indicate which of the metal electrodes in the cathode. Write the balanced equation for the reaction that occurs in the half-cell containing the cathode. (2 marks).

c) Describe what would happen in the cell voltage if the said bridge was removed. Explain the reason for this. ( 2 marks)

please answers all the questions and with detailed answers with explanation please 🙏🏾🙏🏾🙏🏾🙏🏾🙏🏾

Answer 1

a) M = metal Zn

M^2+ = Zn^2+

b) Zn^2+ is the cathode.

c) When the salt bridge is removed, the cell voltage drops to Zero since the salt bridge function is to maintain electrical neutrality in the solution and prevent voltage drop. Salt bridge maintain charge balance because the electrons are moving from one half cell to another and if it's removed the cell voltage will drop to zero.