In the case of precipitation on the anode, it is necessary that the solution contain

Q: An iron object is plated with a coating of cobalt to protectagainst corrosion. Does the cobalt…

A: No the cobalt cannot protect iron by cathodic protection.

Q: Determine if HNO3 can dissolve metal sample. If it can, writea balanced chemical reaction showing…

A:

Q: Define Corrosivity tests

A: Metals are defined as chemical species that have a tendency to lose electrons and form positive…

Q: Give the basic definitions of oxidation and reduction and explain the basic procedure for balancing…

A: Oxidation:It relates to the increase in the oxidation state.  In oxidation, electrons are…

Q: Given the following reaction in acidic media:                Fe2+ + Cr2O72- ® Fe3+ + Cr3+ answer the…

A: Split into oxidation and reduction halves Balance them Multiply the balanced oxidation/reduction…

Q: What electrochemistry principles are involved in the corrosion of metals and its prevention?

A: Corrosion : The deterioration or decay of a metal, because of its reaction with water or air is…

Q: For a particular redox reaction, CiO, is oxidized to ClO, and Cu²+ is reduced to Cu*. Complete and…

A: The complete and balanced chemical equation for the given statement has to be written.

Q: Illustrate the features of Corrosion reactions?

A: ANSWERE IS DISCUSSED BELOW :

Q: Why is it necessary to carry out the reduction of iron and then the titration in redox analysis of…

A: Redox = Reduction + Oxidation A reaction in which reduction, as well as oxidation, takes place…

Q: What is the coefficient of the permanganate ion (MnO.), for the next reaction when balanced with?…

A: The given reaction is, MnO4- + Br-  --->   Mn2+ + Br2

Q: Environmental factors play a key role in the corrosion process and affect the rate of corrosion very…

A: Environmental Factors that the Corrosion: 1.Moisture, Dew and Condensation: Moisture, whether in the…

Q: A sample of impure tin of mass 0.535 g is dissolved in strong acidto give a solution of Sn2+. The…

A: Redox reaction or Oxidation-reduction reaction: The reaction in which the oxidation and reduction…

Q: The purpose of the standard hydrogen electrode is to   provide the standard pressure of 1 atm…

A: To solve this problem we have to know about working of electrochemical cell .

Q: In some old European churches, the stained-glass windows have so darkened from corrosion and age…

A: In some old European churches, the stained glass windows have so darkened from corrosion and age…

Q: (a)electrical energy, (b), and K of the galvanic cell at

A: Galvanic cell reaction is Zn(s) + Cu2+(aq.) ---> Cu(s) + Zn2+(aq.) Cell potential(E°) at standard…

Q: Draw the standard hydrogen electrode diagram by writing down the reference electrode types.

A: STANDARD HYDROGEN ELECTRODE USES: The electrode that is utilized to determine the electrode…

Q: ‘ Corrosion is an electrochemical phenomenan’, explain.

A: Corrosion is the phenomenon of substance degradation by chemical processes. Electrochemical…

Q: Types of corrosion are.

A: In this question we have to choose types of corrosion with explanation.

Q: reduction

A: A redox reaction is defined as the reaction in which reduction, as well as oxidation, takes place…

Q: Throughout the course, we have highlighted the terms an ode and cathode. There are differences…

A:

Q: Which of the following statements accurately describes the difference be ctrolytic cells? A. The…

A: Redox reaction are those in which both oxidation and reduction reaction occurs simultaneously.

Q: The salt bridge allows mixing of the two electrode solutions

A: False

Q: The mercury (I) ion undergoes a redox reaction upon addition of ammonium hydroxide, resulting in the…

A: TRUE The mercurous ion upon reaction with ammonium hydroxide give mercury and a black precipitate.…

Q: The following oxidation-reduction reactions take place in basic medium. For each reaction, (i)…

A: Oxidation state is assigned using known oxidation states.  Using oxidation state change , we can…

Q: Subterranean brines in parts of the United States are rich in iodides and bromides and serve as an…

A: The halogen that is likely to form from this treatment has to be given and the reason has to be…

Q: ype of chemical reaction that involves a transter of electrons between wo species *…

A:

Q: how does the ph and concentration of the electrolyte solution affect the current

A: In electrolyte solution the current is due to the movement of ions of the solution. Effect of…

Q: The following reactions (note that the arrows are pointingonly one direction) can be used to prepare…

A: Halogens belong to Group 17 of the Periodic table. These are the most electronegative elements of…

Q: In the electrolytic refining of a metal M, what would you take as the anode, thecathode and the…

A:

Q: Complete and balance the following half-reaction in acidic solution. Be sure to include the proper…

A:

Q: In the pH metric titration, calomel and glass electrodes are used for measuring. What are the other…

A:

Q: In the corrosion of iron, the formation of pits on the surface of the iron occurs at the anode…

A: Corrosion of iron means rusting of iron, when the iron is in connect with water and air the…

Q: Use the Potential-pH Diagram of Fe – H2O system to state the reactions the system undergoes and the…

A: Given : Use the potential-pH Diagram of Fe-H2O system to State the reactions the system undergoes…

Q: i. Define and explain electrochemical corrosion. ii. Briefly explain the techniques which are mostly…

A: Two questions based on corrosion, which are to be accomplished.

Q: The electrolyte is placed in a special type of cell known as

A: We have to tell the type of cell in which electrolyte is placed

Q: Which of the following statements is(are) true for all galvanic cells?

A: Electrochemical cells / Galvanic cells / Voltaic cells :  The cells in which chemical energy is…

Q: At what pH will the voltage equal to 0 V? Considering all the other species are in standard…

A: The pH of the solution is the hydrogen ion concentration, pH=−log[H+]. The hydrogen ion…

Q: Define oxidation and reduction in terms of electron transferand change in oxidation number.

A: Oxidation reaction takes place when there is loss of electrons. During oxidation reaction the…

Q: A solution is made up to contain 0.01 M NaOH. What is the theoretical +2 tendency of Pb to corrode…

A:

Q: Predict the product and balance redox reaction The presence of sulfuric acid , an excess KMN04 will…

A: Chromic salt has Cr+3 ion. For example Cr2(SO4)3 is a chromic salt.  Dichromate ion is Cr2O7-2 and…

Q: This is a common type of corrosion when different metals are in contact and exposed to a corrosive…

A:

Q: In an aqueous electrolytic cell, nitrate ions never react at theanode, but nitrite ions do. Explain

A: Electrolytic cell is a device that is used for converting electrical energy to chemical energy. The…

Q: The corrosion process proceeds at the same rate throughout the area exposed to the corrosive…

A:

Q: Explain what is considered corrosion?

A: We need to explain the corrosion process.  We will explain it with an example.

Q: Is it possible that a weak electrolyte solution can cause the bulb to glow brighter than a strong…

A: Electrolytes conduct electricity due to the charged ions. Ions carry electric charge from cathod to…