What property allows copper to be purified in the presence of iron and nickel impurities? Explain.

Q: Calculate emf of the following cell at 25°C :Fe | Fe2+ (0.001 M) || H+ (0.01 M) | H2(g) (1 bar) |…

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Q: What is the oxidation number of nitrogen in NO2, N2O, HNO3 ?

A: The species formed after electrons transfer acquire definite charge and it is represented by their…

Q: Complete and balance the reaction in acidic solution. 2 equation: ZnS + NO3 Zn²+ + S + NO Which…

A: The first step in this reaction is to identify which element is getting oxidized and which element…

Q: Write a balanced half-reaction describing the reduction of aqueous zinc cations to solid zinc.

A: A question based on stoichiometry. A half reaction is given that is to be written after balancing…

Q: What does the Ellingham diagram show? Name some metals that can and cannot be purified by reducing…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Name the elements contained in anode mud during refining of copper. Why does it contain such…

A: The name of  elements contained in anode mud during the refining of copper has to be given,

Q: Which solution of CuCl2 will lead to the fastest reaction with aluminum ?

A: The reaction will depends upon molarity(concentration or volume) of the reactant.

Q: What is the oxidation number of Na(s)?

A: Oxidation number: The covalent bond between the atoms of different electronegativity is polar. If we…

Q: What specific features qualify hypochlorite as a "Green" oxidant?

A: Green oxidation: The oxidation process in which O is added or H is removed from substrate leading to…

Q: What is the redox reaction of hypochlorite if titrated with sodium thiosulfate?

A: Redox reaction: It is a kind of reaction in which one species is oxidized and while the other is…

Q: 15. Initially a solution consists of NO2 at a concentration of 1.5M. After some time, the reaction…

A: After some point in time, for a reversible reaction, the rate of the forward reaction is equal to…

Q: Question six

A: Reduction of Nickel (II) oxide to Nickel Metal:

Q: Identify the type of reaction, predict the products and balance the following reactions Na + S, à 6.…

A: The balanced chemical reaction is the reaction in which the number of elements present in the…

Q: - No reaction occurs when the copper wire is placed in a solution of ZnCly. A red-brown sold formda…

A: Correct option is 3: Ca> Mg>Zn>H2>Cu>Ag.

Q: 15. What are the two possible oxidation numbers for tin? Why?

A: The possible oxidation state of Tin is given below

Q: Does the roman numeral refers to the oxidation state of an element?

A: The oxidation state of the metal refers to the number of bonds formed by that element.

Q: Select each side of the mass balance equation for an Fe3(PO4)2 solution where the species in…

A: We have to select each side of the mass balance equation for an Fe3(PO4)2 solution where the species…

Q: reducing and the oxidizing agent in every equation.

A: A chemical reaction is represented by the chemical equation. When two or more reactant reacts to…

Q: For a particular redox reaction, NO is oxidized to NO3− and Fe3+ is reduced to Fe2+. Complete and…

A: Given : NO is oxidised to NO3- and Fe3+ is reduced to Fe2+ in basic medium. Hence the unbalanced…

Q: AgCl forms a strong electrolyte in an aqueous solution. O True O False

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Q: What metal can be oxidized by a solution of Mn2+ but not Mg2+? zinc silver…

A: From the standard data, EMn2+/Mno = -1.18 V      &       EMg2+/Mgo = -2.363 V   From the given…

Q: for a particular redox reaction, SO3 is oxidized to SO2 and Fe³+ is reduced to Fe²+. Complete and…

A:

Q: What specific features qualify hypochlorite as a "Green" oxidant?

A: Given: hypochlorite as a "Green" oxidant

Q: Why does the fracking chemical Acetic Acid prevent precipitation of iron?

A: Fe3+(aq) is precipitated as Fe(OH)3 under basic conditions.  The equilibrium reaction for the…

Q: 2. Use the following chemical equation to answer the following question. UO₂+ (aq) + CH4 UO2 (s) +…

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Q: What is the relationship between oxidation and rust?

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

Q: For a particular redox reaction, BrO−BrO− is oxidized to BrO−3BrO3− and Fe3+Fe3+ is reduced to…

A: BrO−+Fe3+⟶BrO3-+Fe2+ We need to balance the above equation in basic solution with phases.

Q: Silver tarnish is the result of the oxide on the silver surface reacting with hydrogen sulfide (H2S)…

A: (a) Balanced chemical equation for the reaction is given below.

Q: Balance the equation in basic conditions. Phases are equation: N₂H4 + Cu(OH)₂ → N₂ + Cu optional.

A: The question is based on the concept of redox reactions. we need to balance the given reaction in…

Q: Select each side of the mass balance equation for an Fe3(PO4)₂ solution where the species in…

A: Mass balance :

Q: Water is used to balance O atoms in the half-reaction method.Why can’t O²⁻ ions be used instead?

A: The reason why Water is used to balance O atoms in the half-reaction method has to be given

Q: The final step in the Compounds of Copper experiment is the addition of aluminium metal to…

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Q: For each step of the copper cycle, write the products of the reaction and balance the chemical…

A: 7. Answer :  Reaction  is Zn + H2SO4 -----> ZnSO4 + H2   * products will be    ZnSO4 (aq).and H2…

Q: what is the equilibrium reaction involved in the process Sulfuric Acid Production using the Contact…

A: Contact process is the industrial preparation process of sulfuric acid.Four different steps are…

Q: Solder is an alloy containing the metals tin and lead. A particular sample of this alloy weighing…

A: Given- Mass of alloy = 1.50 g Mass of Na2Cr2O7  = 0.368 g Oxidation of Sn2+ to Sn4+ Reduction of…

Q: Which is true about this reaction? CoCl- + 6H2O Co(H2O),* + 4CI- blue pink The formation of CoCl42-…

A:

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.