Determine the oxidation number

Q: A solution of nickel(II) ion (Ni2+) is electrolyzed using a current of 15.0 A (amperes) for 25.0…

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Q: Purification of copper can be achieved by electrorefining copper from an impure copper anode onto a…

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Q: Determine the oxidation number of the Chromium (Cr) in an unknown salt if electrolysis of a molten…

A: Given, Mass of chromium metal deposit = 29.1 g Current (I) = 15 amp Time (t) = 3 hour = 3 × 60 × 60…

Q: An aqueous solution of copper sulphate, CuS04 was electrolysed between platinum electrodes using a…

A: a) The solution is containing CuSO4 solution with Cu2+ ions. Since a cathode, the reduction reaction…

Q: Determine the oxidation number of the Chromium (Cr) in an unknown salt if electrolysis of a molten…

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Q: Please with complete solution and good penmanship

A: Dear student, this question is related to electrolytic cell.

Q: In one process used for electroplating metal RRr, a current of 13 A was passed through an…

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Q: (i) Write the half-cell reaction, the net reaction and cell EMF of the following cell which operated…

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

Q: 1. Fischl, a scientist from Mondstadt specializing in electrochemistry, performed an electrolytic…

A: Since you have asked multiple questions we will solve the first one for you. If you want the answer…

Q: Use the table 'Standard Reduction Potentials' located in the 'Tables', to predict if a reaction will…

A: Answer :- Here I have explained the complete solution hope you will like this !!! yes there will be…

Q: An electrolysis cell contains a solution of 0.10 M NiSO4. The anode and cathode are both strips of…

A: Electrolysis is spitting of chemical decomposition of ionic substances due to passage of electric…

Q: The electrolysis of magnesium chloride can be used to produce elemental magnesium. MgCl2(l) → Mg(l)…

A: We wil calculate mass of Mg

Q: If 2.19 g of chromium metal was deposited from a solution of Cr3+ using a current of 35.2 amps in an…

A: Given, If 2.19 g of chromium metal was deposited from a solution of Cr3+ using a current of 35.2…

Q: 1.) How many minutes will it take to plate out 2.19 g of chromium metal from a solution of cr" using…

A: 1. mass of Cr = 2.19 g  current = 35.2 A    Note : Since there are multiple questions, as per policy…

Q: Use the table 'Standard Reduction Potentials' located in the 'Tables', to predict if a reaction will…

A: The standard reduction potential of copper, E°Cu2+/Cu = 0.337 V The standard reduction potential of…

Q: a current of 5.79 A is passed over 500 seconds in 300 ml of aqueous solution of copper sulphate…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: 22) Using a galvanic cell consisting of: Zn//Zn² II Cu²/Cu -Draw the cell indicating the cathode and…

A: Dear student since you have posted multiple parts question we will solve the first 2 parts of…

Q: The standard reduction potentials for Mg2+/Mg (E'= -2.37 V) and Fe2*/Fe (E'= -0.44 V). When a piece…

A: Concept- By the help of nernst equation, this problem can be solved. Ecell=Eocell− 0.0592/n log10Q…

Q: Thorium, Th, is an actinide metal that can be used as a contact explosive much solid thorium could…

A: Given, Current is passed through Th4+ solution is ---- 0.51A Time is ---- 3hours How much thorium is…

Q: A mixture of copper and gold metals that is subjected to electrorefining contains tellurium as an…

A: Given information: The process through which a metal is refined in the electrolytic cell, in which…

Q: Identify the reaction that occurs at the anode and the cathode. anode: cathode: Determine the…

A: GivenElectrolysis of Molten CrBr3Ions Molten CrBr3 have 1. Cr3+2.  Br-

Q: 1. In an electrolysis of a solution containing Ni2+ (aq), metallic Ni(s) deposits on the cathode.…

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

Q: An antique automobile bumper is to be chrome plated. The bumper, which is dipped into an acidic…

A: The mass accumulation of metal during electrolysis wholly depends on the flow of current and…

Q: Calculate the cell potential for the reaction as written at 25.00 °C, given that [Cr*] = 0.810 M and…

A: The cell reaction given is, => Cr (s) + Fe2+ (aq) ⇔ Cr2+ (aq) + Fe (s) Given: [Cr2+ ] = 0.810 M…

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

A: In concentration cell same electrode and same substance is used in solution.The only difference is…

Q: A solution of Mno is electrolytically reduced to Mn3+. A current of 7.79 A is passed through the…

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Q: In a copper plating experiment in which copper metal is deposited from a copper(II) ion solution,…

A: Mass can be calculated as:-

Q: An aqueous solution of PdCl,2 is electrolyzed for 83.4 seconds and during this time 0.1064 g of Pd…

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Q: A galvanic cell is set-up in the laboratory with a copper anode and an unidentified cathode. Your…

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Q: 5. If 2.46 g of Fe 2+ were oxidized in the reaction Fe2+(aq) + Ce4+( aq ) à Fe3+ (aq) + Ce3+ (aq ),…

A: The molar mass Fe atom is:- 55.85g/mol

Q: A current of 0.46 A was passed through a copper (II) sulfate solution using copper electrodes for 16…

A: According to faraday law of Electrolysis:

Q: The electrolysis of a copper sulfate solution to get copper metal is carried out using a current of…

A: According to Faraday’s first law of electrolysis, the mass of the element deposited is directly…

Q: 1. Fischl, a scientist from Mondstadt specializing in electrochemistry, performed an electrolytic…

A: Given: The mass of metal deposited = 9.701 g. The current passed, (i) = 1.500 A. The time of passage…

Q: A steady current of 5 A  is maintained for 120 seconds in CuSO4 solution. How much Cu is deposited…

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Q: A galvanic cell is set-up in the laboratory with a copper anode and an unidentified cathode. Your…

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Q: What constant current would be needed for a copper cathode to accumulate 3.06 g of copper in 30 min.…

A: given- mass = 3.06 g. time = 30 min = 30 x60 = 1800 sec electrochemical equivalent of copper = 3.29…

Q: Use the table 'Standard Reduction Potentials' located in the 'Tables', to predict if a reaction will…

A: Given: Solution of Al3+ is added with the Mn.

Q: Chrome is plated from solutions of chromium(III) ions. If a particular application requires 13.7g of…

A: Given : Mass of Cr produced = 13.7 g And time = 90 min = 90 X 60 = 5400 s…

Q: Use the table 'Standard Reduction Potentials' located in the 'Tables', to predict if a reaction will…

A: Cu metal cannot displacement  Al3+ from its solution.  Thus, no reaction takes place.

Q: Determine the oxidation number of the Chromium (Cr) in an unknown salt if electrolysis of a molten…

A: Given: The time is taken for the electrolysis, (T) = 3 hrs = 3 The current passed through the…

Q: current of 5.79 amps passes over 500 seconds in 300ml aqueous solution of CuSO4 copper…

A: Faraday's laws of electrolysis were proposed to solve such problems. According to the first law of…

Q: Use the table 'Standard Reduction Potentials' located in the 'Tables', to predict if a reaction will…

A: when Mg metal is put into a 1M aqueous H+ solution. Mg(s) + 2H3O+ ------> Mg2+(aq) + H2 + H2O(aq)

Q: A 10.0 gram sample of copper ore was dissolved in nitric acid and then electrolyzed until all of the…

A: Percentage of copper in the original sample can be calculated by knowing the amount of copper metal…

Q: A galvanic cell is set-up in the laboratory with a copper anode and an unidentified cathode. Your…

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Q: This part is on electrolysis: Calculate the mass of copper deposited during the electrolysis of a…

A: Given, Current = 20.0 A Time , t = 35.0 minutes Molar Mass of Cu = 63.55 g/mol  Mass of Cu = ?

Q: How many grams of cadmium metal will be deposited from a solution that contains Cd²+ ions if a…

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Q: A galvanic (voltaic) cell contains a copper cathode immersed in a copper(II) chloride solution and a…

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: 61. Consider only the species (at standard conditions) Na*, Cl¯, Ag*, Ag, Zn+, Zn, Pb in answering…

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Q: Electrolysis of Cr³+ (aq) produces Cr²+ (aq). If you had 350 mL of a 0.12 M solution of Cr³+ (aq),…

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Redox Reactions

Redox reactions are considered to be the chemical reactions involving both oxidation and reduction processes. They are actually oxidation-reduction reactions. The term redox is made from two words where “red” comes from reduction and “ox” comes from oxidation. During a redox reaction electron transfer takes place in such a way that one chemical compound gets reduced and the other one gets oxidized.