to wear a nickel-plated copper coin: a) the nickel coin must be cathode b) the cathode must be made of copper c) electrons must flow to the anode d) the solution must contain nickel ions

Q: Iron rusts but aluminium does not easily corrode. Which statement explains why aluminium does not…

A: Explanation to the correct answer is given below

Q: The reduction of any atom ends in an oxidation state of zero. False  True

A: The reduction of any atom ends in an oxidation state of zero. True or False?

Q: 1) What is the definition of oxidation?

A: Redox reaction involves the oxidation and reduction simultaneously. These reactions involve the…

Q: The oxidation number of chlorine in its compound can lie between : a  0 to 7 b   -1   to  7 c   -2…

A: Chlorine is an electronegative element of group 17 (halogen family). It has seven electrons in its…

Q: Consider the redox reaction shown below: 2 MnO4-1   +   Cl-1   +   H2O   →   2 MnO2   +   ClO3-1…

A: The given reaction is, 2 MnO4-1 + Cl-1+ H2O  →  2 MnO2 + ClO3-1 + 2 OH-1

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

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

Q: Which of the following actions would be involved in electroplating with gold? Select all that apply.…

A: Electroplating with gold is a method in which thin layer of gold is deposited on the surface of…

Q: The electrolysis of a concentrated sodium chloride solution would   produce aqueous sodium…

A: First option. Produce aqueous sodium hydroxide

Q: What are the products of the following double replacement reaction? balance the equation    Calcium…

A:

Q: What happens to the electrons of a reducing agent during a reaction?   Electrons are held…

A:

Q: What is cathodic protection?

A: Corrosion is the action of a metal that has been extracted from ore reverting to its primary state…

Q: Corrosion of iron can be prevented by placing it in contact with a piece of iron, as: a) Iron acts…

A: C option is correct. Zinc is oxidized faster than iron .electrons are derived from zinc to iron.

Q: 14. During the course of a redox reaction A electrons are lost from one substance and added to…

A: The addition of electrons or decreases in the oxidation state is known as a reduction reaction and…

Q: electrochemical system, what is being described by the following? positive electrode A. electrolytic…

A: In an electrochemical system, 1) positive electrode - C. Cathode

Q: For the following pairs of redox processes given, work out the oxidation numbers for the reactions…

A: Balancing of these redox reaction is given by:

Q: Which of the following elements has only one stable oxidation state in an aqueous solution?  a) Ge…

A: One of the prominent phenomena observed in p-block elements is the inert pair effect. The reluctance…

Q: identity it each of the statements below about is True or False. Then justify your choice for False…

A: Oxidation means lose of an electrons  whereas reduction means gain of an electrons.

Q: 8. The diagram shows the apparatus used in an experiment to electrolyse concentrated aqueous sodium…

A: Dear student, we are authorised to solve only first three subparts of a question. Please post rest…

Q: 4) An oxidizing agent is a reactant that... A. accepts electrons and oxidizes another reactant B.…

A: Given,  In the redox reaction, participate reactants one can act as oxidizing agent another act as…

Q: 12) Assign the oxidation number to each element in each of the following. 1) 11) 15) 16) 8) 2) 7) 3)…

A: Answer:- This question is answered by using the simple concept of assigning the oxidation state of…

Q: A piece of solid Mg metal is put into an aqueous solution of FeSO4. Write the net ionic equation for…

A: Higher reactive metal can reduce the metal ion of lower reactive metal from its aqueous solution.…

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: numerical

A:

Q: 1. Imagine that you and a friend went to sea for catching fish by boat. However, in the middle of…

A: a) As we are in middle of seawater, we could make battery out of seawater. Seawater is good…

Q: 9727/variants/1189727/take/17/ Question 21 Which of the following actions would be involved in…

A: Electroplating is a process that uses an electric current to reduce dissolved metal cations so that…

Q: Explain what happens on a molecular level to cause the masses of the anode (Zinc) and cathode…

A: The anode (positive electrode ) is made from impure copper and the cathode (negative electrode) is…

Q: When magnesium metal is added to a beaker of HCl (aq), a gas is produced. Knowing that magnesium is…

A:

Q: When a solution of Nal is electrolyzed, what can we conclude immediately? sodium is deposited at the…

A:

Q: 1. Define the following: Cathode, anode, redox, salt bridge

A: A cathode is the metallic electrode through which current flows out in a polarized electrical…

Q: The oxidation number for all polyatomic ions is equal to the overall charge of the ion.

A: The oxidation number is a concept in chemistry that allows us to keep track of electrons in an atom.…

Q: a solution of zinc acetate and a piece of aluminum metal are mixed together in a test tube  a)…

A:

Q: Consider the following equation: 2MnO+50₂0+ 16H → 2Mn²+ +10CO₂ + 8H₂O In this reaction b. carbon (C)…

A: The reaction ;

Q: A reducing agent can be described as a substance that  loses electron and causes reduction  gains…

A: As we know,Reducing agent is a substance that cause reduction & can lose electrons and be…

Q: indicates the oxidation number of each atom in the following molecules. a)NH3 b) Al2O3

A: Indicates the oxidation number of each atom in the following molecules---

Q: Balance the following redox reactions using the half- reaction method: a. Basic solutions of…

A: We have to balance the given redox reactions.

Q: Balance the given equation using the half-reaction method. Identify the ion or element that gained…

A: The given reaction is, Fe2+ + Cl2 ---> Fe3+ + Cl-

Q: A piece of solid Mg metal is put into an aqueous solution of Ni(NO3)2. Write the net ionic equation…

A: The reaction in which reduction and oxidation occurs simultaneously is known to be redox reaction.…

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.