Which expression(s) are incorrectly defined? I- Ohmic potential is the voltage that overcomes its electrical resistance in an electrochemical cell while current is flowing. II- Concentration polarization occurs when the concentrations of reactants or products on the electrode surface are greater than that in the whole solution. III- Overvoltage is only the voltage required to overcome the activation energy of the reaction at the cathode. cathode only. IV- E = Ekatode - Eanode - IR - overvoltage - concentration polarization A.II and IV

Q: The free energy change for the following reaction at 25 °C, when [H*] = 1.20 M and [Pb2+] =…

A: The relation between cell potential and Gibbs free energy of a reaction is given as,…

Q: Use standard reduction potentials to find the equilibrium constant for the following reaction at 25…

A: The equilibrium constant K is defined as the ratio of the concentrations of the products to the…

Q: After plotting the cell potential (Ecell) measured at 298 K on the y-axis versus the natural…

A: First we need to determine the straight line equation used for this plot.  Then by comparing with…

Q: Which statement describes the electroanalytical techniques? The electroanalytical methods can…

A: Redox reactions can be defined as the reactions in which both oxidation and reduction reactions…

Q: An electrochemical cell is set up with the following configuration: Hg|Hg2+||Mn2+|Mn.  The solutions…

A: Spontaneity of a Chemical reaction in a galvanic cell on the basis of cell potential:

Q: Consider the following redox reaction: Sn2+  +  Sr(s)  -->  Sn(s)  +  Sr2+ What is the cell…

A: Given, concentrations of Sn2+ and Sr2+ are 3.5M & 0.05M respectively at temperature 10°C. The…

Q: Consider the following cell notation and use a Table of Standard Electrode Potentials (Appendix Le…

A: Ecell can be calculated using nernest equation. To calculate Ecell , we would first write a complete…

Q: Which is the best oxidizing agent in the following set? You may use the table of standard cell…

A: Oxidizing agent

Q: For the half-reaction Cl2(g) + 2 e------>2 Cl-(aq), what are the standard conditions for the…

A: The given reaction is, Cl2(g) + 2 e------>2 Cl-(aq)

Q: 1. Predict in which direction (toward the products side or toward the reactants side) that each of…

A: We know that oxidation refers to the loss of electrons by a chemical species while reduction refers…

Q: The free energy change for the following reaction at 25 °C, when [Pb2+] = 1.17 M and [Ni2+] =…

A: The energy which are used in reaction  to  do work is known as Gibbs free energy.

Q: Calculate the cell potential in volts for following cell. Eo = +1.93 V Mg|Mg2+, 1.00 x 10-3 M||Fe2+…

A:

Q: For the voltaic cell indicated by: Sn (s)|Sn²+ (aq)||Fe3+ (aq), Fe2* (aq)|Pt (8) Sketch the cell,…

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…

Q: What is the value of the equilibrium constant for the reaction between Al(s) and Cd²+(aq) at 25°C?…

A: Al(s) + Cd2+(aq) ---->  At anode (oxidation) -> Al(s) ----> Al3+(aq) + 3e At cathode…

Q: Consider these two entries from a fictional table of standard reduction potentials. X3+ + 3 e → X(s)…

A:

Q: Calculate the actual cell potential (E) at 25.0 oC for the following redox reaction when the…

A: The question is based on concepts of electrochemistry. we have been given a galvanic cell. we have…

Q: 15. What is the shorthand notation that represents the following galvanic cell reaction? 2 Fe2+(aq)…

A:

Q: The overall redox reaction for a given galvanic cell is 2H+ (aq) + Fe(s)→→→→→Fe²+ (aq) + H₂(g).…

A:

Q: The free energy change for the following reaction at 25 °C, when Sn2+ = 0.00776 M, is -133 kJ: Sn²+…

A: Spontaneous reaction : It is the reaction which favours the product reaction that is it supports the…

Q: An electrochemical cell consists of a standard hydrogen electrode and a copper metal electrode. a.…

A:

Q: Calculate the equilibrium constant K, for the following balanced redox reaction at 25oC.  (R = 8.31…

A: When a reaction is in equilibrium it has the value of Gibbs free energy change of the reaction as…

Q: One electrode in an alkaline battery is zinc, and the other is manganese dioxide. (a) Fill in the…

A: Alkaline battery is a primary battery which extracts energy from the reaction between zinc and…