A baby’s spoon with an area of 6.25 square centimeter is plated with silver from silver  nitrate using a current of 2.00 A for two hours and 25 minutes. (Masterton et al., 2012) What is the thickness of the silver plate formed? The density of silver is 10.5 g/cm3.

Q: 8. What mass of silver can be plated onto an object in 33.5 minutes at 8.70 A of current?…

A: According to Faraday's 1st law, w = Z I T      where Z is chemical equivalence which is equals to…

Q: 7. How long has a current of 5 amperes to be applied through a solution of copper nitrate  to coat a…

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

Q: How long will it take for a uniform current of 6.00 A to deposit 78.0 g gold (197.0 g/mol) from a…

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Q: The passage of a current of 0.750 A for 25.0min deposited 0.369 g of copper from a CuSO4 solution.…

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Q: How many seconds are required to deposit 0.268 grams of iron metal from a solution that contains…

A: Given  Mass deposited (m) = 0.268 g Current (i) = 1.22 A Time (t) = ? S The equation is Fe2+ + 2e-…

Q: Define the term a standard hydrogen electrode?

A: An electrode is a point in the electrolyte where current enters and exits. The cathode is where the…

Q: A thin circular-disk earring 4.00 cm in diameter is platedwith a coating of gold 0.25 mm thick from…

A: GIVEN: Diameter of earring =4.00cm Thickness of coating=0.25 mm Current(I) = 0.013 A d of gold =19.3…

Q: There are the following two cells: I. Ag; Ag* (M=1) // Cu** (M= 1); Cu Cu; Cu** (M= 1) // Ag* (M=1);…

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Q: Which reference electrode is used to measure the electrode potential of other electrodes?

A: A reference electrode is an electrode which has a stable and well known electrode potential.

Q: Gold can be plated out one atom in thickness and look like solid gold. If a necklace has a surface…

A: The oxidation state of gold in the solution given is +3 i.e Au3+. Hence the solution will have Au3+…

Q: How long, in hours, must a current of 5.00 A be applied to a solution of Ag+ to produce 10.5 grams…

A: From the combination of Faraday's first and second law, we have : m = ItM/Fz  Or, t = mFz/IM ...(1)…

Q: pH

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Q: A. If the measured cell potential is 1.800V, what is the concentration of Au3+? B. How long will it…

A: Here we have to determine the concentration of Au+3 of the galvanic cell and mass of gold…

Q: grams

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Q: The element hafnium, Hf, is used in control rods for nuclear reactors and as an insulator for…

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Q: Why is it not possible to measure single electrode potential?

A: Potential difference in the electro-chemical cell is generated due to the redox  reaction occurring…

Q: 3. The passage of a current of 0.750 A for 25.0 min deposited 0.369 g of copper from a Cuso,…

A: The Faraday's laws are the main concepts of electrochemistry.  The first law shows  the connection…

Q: Gold can be plated out one atom in thickness and look like solid gold. If a ring has a surface area…

A: The oxidation state of gold in the solution given is +3 i.e Au3+. Hence the solution will have Au3+…

Q: If the concentration of Cd2+ is reduced to 0.010 M, and [Ni2+] = 1.0 M, what is the new cell…

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Q: by drawing, the interaction of the electrode for the following reference electrodes: 1=silver-Silver…

A: Given: Electrodes: Silver-Silver chloride Calomel electrode

Q: a. What is the cell notation of the set-up? b. What is the standard cell potential?

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Q: An aqueous copper (II) chloride solution is electrolyzed for a period of 156 minutes. Using a…

A: We have given that  An aqueous copper (II) chloride solution is electrolyzed for a period of 156…

Q: Explain Standard Electrode Potentials?

A: If the temperature is 298 K and the pressure is 1 atm,then these are known to be the standard…

Q: Which would the cell potential be if you changed the concentrations to [Fe3*] = 0.60 [Hg²*) = 1.30 M…

A: The Nernst equation is shown below: Where: Ecell = cell potential E0cell = standard cell potential…

Q: What is understood by a normal hydrogen electrode? Give its significance.

A: Normal hydrogen electrode is the electrode that is used as reference to determine the potential of…

Q: The surface area of an object to be gold plated is 49.8 cm?, and the density of gold is 19.3 g/cm?.…

A: Given: Surface area of gold (A) = 49.8 cm2                         Density of gold = 19.3 g/cm3…

Q: If the concentration of Na+ inside of a cell increases, the Nernst potential for Na+ will do what?

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Q: A baby’s spoon with an area of 6.25 square centimeter is plated with silver from silver  nitrate…

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

Q: Consider the following galvanic cell: Ag(s) | Ag*(3.0 x 10 4 M) || Fe3*(1.1 x 10 3 M), Fe2*(0.040 M)…

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Q: Consider the reaction  MnO2 + 4H+ + 2Br = Mn2+ + Br +2H2O At what pH is the voltage zero if all…

A: Given redox reaction is : MnO2 + 4H+ + 2Br- -----------> Mn2+ + Br2 + 2H2O At what pH is the…

Q: Solid, metallic chromium can be electroplated from acidic aqueous solutions containing dichromate…

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Q: A current of 0.500 A flows through a cell containing Cd(II) for 10.0 minutes. Calculate the maximum…

A: Converting time from minute to second 10 min = 10 X 60 = 600 s charge = current X time = 0.500 A X…

Q: Calculate the Ecell of the following galvnic cells. a) Cu | Cu2+ (0.10 M) || Br2 (0.015 M), Br-…

A: Here we are required to find the cell potential of electrochemical cell reaction .

Q: Consider the reaction MnOza) + 4Ha + 2Bra> Mn?"ca + Bra0) + 2H20m At what pH is the voltage zero if…

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Q: n a certain electrolysis experiment involving Al3+ ions, 63.7 g of Al is recovered when a current of…

A: 1 Faraday = 96500Columbs  Time = Charge/Current  Charge = current *time

Q: Molten CaCl₂ can be electrolyzed to form metallic Ca. For what duration should an electrolysis be…

A: Faraday's first law :-  It states that, the amount of the substance deposited at the electrode is…

Q: How long does it take to paint a plate with an area 25 cm2 with a layer of Copper is 0.1 mm thick,…

A: Given,  a plate with an area 25 cm2 is painted with a layer of copper of 0.1mm thickness. Current…

Q: The spontaneous flow of current occurs for an electrochemical cell if E is. . Seç. According to the…

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Q: The passage of a current of 0.750 A for 25.0 min deposited 0.369 g of copper from a CuSO, solution.…

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Q: LECTROCHEMISTRY: Determine the molar mass (amu) of Metal (M) if it took 1.41 minutes for a current…

A: Charge = current *time(in s) Current = 1.38 A  Time = 1.41*60 s = 84.6 s  Charge = 1.38*84.6 =…

Q: Why is the reference electrode placed near the working electrode in a three electrode cell?

A: We know that the working electrode is the place where the reactants undergo  reaction like oxidation…

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Q: List the types of electrodes used for pH measurement. Explain the construction details of one of…

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Q: When a ruthenium chloride solution was electrolyzed for 500. s with a 120 mA current, 31.0 mg of…

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