if a metal is corroded: a) he receives electrons b) it is reduced c) it acts as a reducing agent d) its oxidation number decreases

Q: An atom changes its oxidation number from -5 to -3. Was it oxidized or reduced? Oxidized Reduced…

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Q: A solution of lead(II) nitrate is mixed with a solution of potassium iodide.  balanced ionic…

A: The aqueous solution of lead(II) nitrate reacts with the aqueous solution of potassium iodide to…

Q: Can one half-reaction in a redox process take place independently of the other? Explain

A: Redox reaction is defined as the reaction in which oxidation and reduction take place…

Q: Determine the oxidation number of the element underlined. Show your calculations.

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Q: Identify two metals that do not corrode easily in the presence of oxygen and water. Explain why they…

A: To identify: Two metals that do not corrode easily in the presence of oxygen and water.

Q: A substance which oxidizes itself and reduces other is known as(a) Oxidising agent(b) reducing…

A: The gain of oxygen or the loss of hydrogen or the loss of an electron from any chemical species…

Q: A piece of solid Sn metal is put into an aqueous solution of NISO4. Write the net ionic equation for…

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Q: Describe how you would test and how the results obtain when testing corroded components differ from…

A: Test specimens of each components to be tested,are engraved with a unique identification…

Q: Corrosion of metals is not always harmful. Illustrate.

A: Corrosion is the slow eating up of a metal. it is a harmful process.

Q: Choose the INCORRECT statement. A) Corrosion of metals is an oxidation reduction process. B) Rust is…

A: Explanation to the correct answer is given below

Q: 11. Using a metal that does not corrode to cover a more corrosive metal is known as * Choose Barrier…

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Q: Oxidation cannot occur without air water reduction D oxygen acid

A: There are different definitions for Oxidation.  Such as,

Q: Given compound (d), what is the reducing agent? * iron sulfur chlorine O hydrogen охудen

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Q: a State which material is oxidized b State which material is reduced c Identify the oxidizing agent…

A: We are given with a reaction and are asked to determine the oxidation state of each atom. And hence…

Q: How can we determine whether a given chemical reaction is an oxidation–reduction reaction?

A: Chemical reaction is the one in which the reactants are converted from one form to another resulting…

Q: oxygen increases hydrogen lose reducing agent decreases gain oxidizing agent electrons or addition…

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Q: Why do we say that the more active a metal is, the more easily it will be oxidized?

A: Metals are malleable, ductile, good conductors of heat and electricity, have high melting point.

Q: Determine the oxidation number of ? element. (NH4)2M004

A: Determine oxidation number of element ?

Q: Which of the following describes redox in displacement plating?

A: Electrochemical plating or displacement plating works as the electrochemical potential of each metal…

Q: . Is it possible to have a reaction in which oxidation occurs and the reduction does not? Explain.

A: 1.  Oxidation involves lose of electrons and reduction involves gain of electrons.

Q: a commonly used catholic protection for iron is zinc . This is because; (choose the most correct…

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Q: Costume jewelry is a decorative item made up of inexpensive metal and it is electroplated with a…

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Q: Balance the following equations using the change in oxidation number method. + FeCl, + CrCl, + KCI +…

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Q: A piece of solid Fe metal is put into an aqueous solution of HNO3. Write the net ionic equation for…

A: Redox reactions are those in which the oxidation and the reduction reactions are taking place…

Q: Electroplating is used for the following reason . A.) Covering the expensive metal with cheap metal…

A: Electroplating is a process in which  one thin and flate metallic layer is coated on metallic layer…

Q: 9. In an electrochemical cell, the cathode A. is reduced. B. loses mass. C. is the reducing agent.…

A: In the given electrochemical cell, the electrical energy is produced from the cell reaction at the…

Q: Consider the following general electrolytic cell:(a) At which electrode does oxidation occur?(b) At…

A: An electrolytic cell is a device use to conduct non-spontaneous chemical reactions by utilizing…

Q: Select one of the following redox reactions that is beneficial to humans. Explain. A. Photosynthesis…

A: Answer:- This question is answered by using the simple concept of redox reaction which are…

Q: Identify the atoms that are oxidized and reduced, the change in oxidation state for each, and the…

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Q: 4 Write down half-equations for the processes occurring during electrolysis at: a the anode: b the…

A: Extraction of aluminum carried out from alumina or aluminum oxide, by charcoal or Carbon.  In this…

Q: Is it possible to have a reaction in which oxidation occurs and the reduction does not? Explain

A: Oxidation is loss of electron, addition of oxygen and removal of hydrogen.  Reduction is addition of…

Q: 4.For a galvanic cell, the cathode has a ________ sign and is the site of ________. 5.During an…

A: According to the definition: Oxidation occurs at the anode Reduction occurs at the cathode

Q: What is the relationship between oxidation and rust?

A: Oxidation is a chemical reaction which involves lose of electrons, gain of oxygen.

Q: An oxidizing agent: .A loses electrons .B gains electrons .C Both D

A: Please find your solution below : Redox reactions are the chemical reactions in which reduction and…

Q: Which of the following statements is correct? A) Carbon is oxidized. B) Oxygen is the reducing…

A: The reaction given is  CH4 (g) + 2 O2 (g) -------> CO2 (g) + 2 H2O (g) Since in CH4 , C is more…

Q: When silver tarnishes what has been oxidized and what has been reduced?

A: Solution: First we must know that what is silver tarnishing. So it generally redox reaction of metal…

Q: oxidizing agent an

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Q: What is the oxidation number of each oxygen atom in HOOH?

A: Oxidation Number- Oxidation number  also called as oxidation state is measure of degree of…

Q: what's the oxidation number of each element? which of these is oxidation agent/ reducing agent?

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Q: OXIDIZING AGENT. W

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Q: Determine the oxidation number of the elements in the following compound. 1. CIO3

A: In most of compounds the oxidation number of Oxygen is -2 whereas chlorine shows variable oxidation…

Q: . When an aqueous solution conducts electricity, there is always               . A. hydrogen or…

A: Electrolysis: It is a decomposition of ionic compounds by passing electricity through molten…

Q: Which metals do not corrode easily?

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Q: A piece of solid Mg metal is put into an aqueous solution of CuSO4. Write the net ionic equation for…

A: Given, Solid metal = Mg aqueous solution =CuSO4

Q: (a) What is meant by the term reduction? (b) On whichside of a reduction half-reaction do the…

A: Electrochemistry is a branch of science that deals with the concept of generating electricity by the…

Science behind corrosion-test

Corrosion is defined as an activity that transforms refined metals into more chemically stable forms such as oxide, hydroxide, carbonate, or sulfide. It refers to the slow decomposition of things (typically metals); thanks to chemical and/or electrochemical reactions with their surroundings. Corrosion engineering is the science of preventing and controlling corrosion.

Corrosion

Corrosion is defined as an activity that transforms refined metals into more chemically stable forms such as oxide, hydroxide, carbonate, or sulfide. It refers to the slow decomposition of things (typically metals); thanks to chemical and/or electrochemical reactions with their surroundings. Corrosion engineering is the science of preventing and controlling corrosion.