(a) What is the difference between a battery and a fuel cell?(b) Can the “fuel” of a fuel cell be a solid?

Q: The dichromate ion, Cr2O72-, in acidic solution is a common oxidizing agent for organic compounds.…

A:

Q: A galvanic cell consists of a cathode with a cadmium electrode in a 0.252 M solution of Cd(NO3)2 and…

A: The concentration of cadmium ions at anode is equal to the concentration of cadmium nitrate solution…

Q: >Why do some electrochemical cells employ inert electrodes such as platinum?

A: In some redox reactions, may be one of the reactant or product and sometimes both reactant and…

Q: In the electrolysis of water, how long will it take to produce 155.0Lof H2 at 1.0 atm and 273 K…

A:

Q: Using the information from the table below, calculate the Nernst Potential for Na+, K+, Ca+2, Cl-.…

A:

Q: A molten binary salt, Cal2, is electrolyzed. Write the half reactions that occur and identify which…

A: The binary salt given is CaI2  hence it has cation Ca2+ and anions I-

Q: Write the cell notation for an electrochemical cell consisting of an anode where Cr (aq) is oxidized…

A: Given, in anode Cr2+ was oxidized to Cr3+ In cathode, Cd2+ was reduced to Cd Concentration of…

Q: Write the cell notation for an electrochemical cell consisting of an anode where Mg (s) is oxidized…

A: In cell notation anode is written on left side and cathode on right side.

Q: A galvanic cell consists of a cathode with a nickel electrode in a 0.186 M solution of Ni(NO3)2 and…

A:

Q: A galvanic cell with a voltage of 1.3 V utilises the reaction: Zn + Cu2+ →→ Cu + Zn2+, as a source…

A: Given: The cell voltage is 1.3 V. The amount of Cu and Zn used is 6.3 g and 11 g, respectively.

Q: How much Ca will be produced in an electrolytic cell of molten CaCl2 if a current of 0.452 A is…

A:

Q: Consider the electrolysis of tin (II) sulphate during which tin is deposited at one electrode and…

A: A numerical problem based on electrolysis, which is to be accomplished.

Q: Define what is meant by standard cell.

A: Given term,     Standard cell

Q: Given the schematic representation Cd | Cd2+ (1 M) || Ag+ (1 M) | Ag,  write the overall cell…

A: A voltaic cell is an example of electrochemical cell. It uses a chemical reaction to produce…

Q: A. If the measured cell potential is 1.800V, what is the concentration of Au3+? B. How long will it…

A: Here we have to determine the concentration of Au+3 of the galvanic cell and mass of gold…

Q: How long would it take to deposit 9.38 g of copper (molar mass 63.55 g/mol) at the cathode of an…

A: Faraday's law states that the amount of chemical change that is produced by passing a current to an…

Q: Why is it not possible to measure single electrode potential?

A: Potential difference in the electro-chemical cell is generated due to the redox  reaction occurring…

Q: A student wishes to set up a voltaic cell that is a concentration cell made using two solutions of…

A: Concentration cell and cell potential calculation :

Q: How long will it take to produce 78 g of Al metal by the reduction of Al* in an electrolytic cell…

A:

Q: A fuel cell is constructed in which both electrodes make use of the oxidation of methane. The…

A: (a)

Q: Calculate the theoretical cell potential of the following cell. If the cell is short-circuited,…

A: The given cell notation is: Ag(s)|Ag+(aq)(0.0575 M) || H+(aq)(0.0333 M)| O2(g)(1.12 atm), Pt The…

Q: 1. What is a cell potential? 2. In what way does a galvanic cell becomes an electrolytic cell?

A: Galvanic cell is the spoteneous redox reaction where chemical energy transferred to electrical…

Q: When building a galvanic cell, what is the importance of the molecule in the anode vs the cathode.…

A: Galvanic cell converts chemical energy into electrical energy. Here Zn rod is dipped in ZnSO4…

Q: In one process used for electroplating silver, a current of 10.23 A was passed through an…

A: Dear student, this question is related to electroplating process.

Q: Enter your answer in the provided box. What is the standard emf of a galvanic cell made of a Cd…

A: Since concentration of both solutions is 1.0M (standard conditions) , emf of cell will be equal to…

Q: How long, in minutes, will it take to produce 370.0 g of pure lithium by running a current of 330 A…

A: Given, Current passing = 330 A Mass of Li = 370.0 g  Molar mass of Li = 6.94 g/mol

Q: If a current is flowing from a battery that's used to electroplate an object with silver, how do I…

A: Given:1.45 A.hr = 1.45 amp current per hour.

Q: A concentration cell similar to the one shown is composed of two Mg electrodes and solutions of…

A: A electrochemical cell is used is used convert chemical energy to electrical energy it involves  a…

Q: calculate the value of the electrode potential of hydrogen: a) in the 0.05 M solution of sulfuric…

A: a) Given : Concentration of sulfuric acid i.e H2SO4 = 0.05 M Since H2SO4 is a strong acid which will…

Q: Write cell schematics for the following cell reactions, using platinum as an inert electrode as…

A: This question is from chapter Electrochemistry where we are given redox reactions and we have to…

Q: What is understood by a normal hydrogen electrode? Give its significance.

A: Normal hydrogen electrode is the electrode that is used as reference to determine the potential of…

Q: A battery can provide a current of 2.20 A at 1.40 V for 10.0 hr. How much energy (in kJ) is…

A: GIVEN: Current = 2.20 A Voltage = 1.40 V Time= 10.0 hr To CALCULATE: Energy (kJ)

Q: Use your knowledge of redox and equilibrium to derive an expression for Keq in terms of E°cell for a…

A:

Q: The electrodes in a silver oxide battery are silver oxide 1Ag2O2 and zinc. (a) Which electrode acts…

A: Silver-oxide battery is the primary one in the miniature battery product.   It is used in…

Q: How are standard electrode potentials measured?

A: Standard electrode potential is referred to Eo of a cell and is in an electrochemical cell at a…

Q: The Nickel-Cadmium battery cell has a standard potential of 1.2 V. What is the standard free energy…

A: The relation between Gibbs free energy change and emf of cell is given by,  ∆G = -n F Ecell Ecell is…

Q: Calculate the actual cell potential if you have a 1 M solution of MgSO4, but only a 0.5 M solution…

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Q: The redox reaction taking place in a battery cell is as follows: Since the Zn + ² concentration in…

A:

Q: A fuel cell is constructed in which both electrodes make use of the oxidation of methane. The…

A:

Q: A current of 0.452 Amps is passed through an electrolytic cell containing molten CaCl2 for 1.50 hrs.…

A:

Q: Suppose the current flowing from a battery is used to electroplate an object with silver. Calculate…

A: The electrochemical reaction of silver is –

Q: If in using a lead-acid battery to start a car, 1.00 gram of Pb (207.2 g/mol) is consumed on the…

A: Given:  m = 1 g of Pb MW = 207.2 mol = 1207.2= 0.004826 mol of Pb I = 0.5 C/s

Q: A battery can provide a current of 3.80 A at 3.60 V for 8.00 hr. How much energy (in kJ) is…

A: Given that a current of 3.80 A was provided by battery at 3.60 V. The power can be calculated as…

Q: How long would it take to deposit 9.38 g of copper (molar mass 63.55 g/mol) at the cathode of an…

A: Given, m = 9.38g I= 23.2A

Q: In the electrolysis of water, how long will it take to produce 165.0 L of H2 at 1.0 atm and 273 K…

A:

Q: A digital watch battery draws 0.10 milliamperes of current, which is provided by a mercury battery…

A: m=Mass of Hg=1.10g Equivalent wt of Hg =200.59/2 =100.295 Current = 0.10 mA or 0.10x10-3 F=96500C…

Q: What is the value of the standard copper potential in half-cell reactions?

A: Solution-  standards copper potential in half-cell -  Ca2++2e−   ⟶   Ca            −2.868

Potentiometric Titrations

Potentiometric titration is one of the important titration methods and is mainly carried out to characterize acid solutions. It follows a method similar to that of the normal titration technique, but the main difference is that there is no indicator used in the potentiometric titrations. Instead of using an indicator, electrodes are employed for monitoring the whole titration process. A scientist named Robert Behrend did the potentiometric titration for the first time, and it was done using the mercurous solution and potassium chloride.