One of the most problems encountered. Molecular masses can be determined through electroplating. Determine the molecular mass and identity of a +2 metal, X, that plates 46.3g of X in 6.75 hours at a current of 2 A.

Q: Consider the reaction at 25°C MnO2(s) + 4 Haq) → Mn(aq) + Br2(1) + 2H20 (1) At what pH is the…

A: The given reaction is,            MnO2(s)+4H(aq)→Mn(aq)+Br2(l)+2H2O the ionic reaction is…

Q: Example: A steel coupon with an anode surface area of 1000 cm2 is placed in an electrolyte. The…

A: The current, I = 1 mA Or 0.001 A

Q: How long would it take to electrodeposit all the Cu2+ in 0.300 L of 0.230 M CuSO4 solution with an…

A: Given, 0.300 L of 0.230 M CuSO4 solution Applied potential difference of 0.275 V  Current of 3.50…

Q: Solid nickel can be plated 298 K while passing 5.75 amperes of current through a Ni^ 2+ solution .…

A: Given: Mass of nickel = 7.80 g Current passed through Ni2+ solution = 5.75 A

Q: Determine the non-standard potential of the cell below, set up at 340 K:

A: Given: cell notation

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

A: Answer :- 337.7 h The time take to plate 14.0 kg of Cu onto the cathode when 35.0 A current passed…

Q: Consider the following electrochemical cell: Pt|H,(8,p°)|HCI(aq.b)|H8.C1,(s)|Hg() The potential of…

A: In a cell notation, the left-side represents the oxidation-half reaction and the right side…

Q: In the electrolysis of water, how long will it take to produce 1.000 × 102 L of H2 at STP (273 K and…

A: Welcome to bartleby!  Introduction :  We have to calculate time required for electrolysis of…

Q: Calculate the time needed for a constant current of 0,8510 to deposit 0,250g of cobalt 2 as…

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Q: Purification of chromium can be achieved by electrorefining chromium from an impure chromium anode…

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Q: How long(in hours) would be required for the electroplating of 78g of platinum from a solution of…

A: Mass of platinum required for electroplating = 78 g  Molar mass of platinum = 195.08 g/mol  Number…

Q: impure

A: According to this law,  mass diposite on cathode is direactly proportion to the current.  So,…

Q: Purification of chromium can be achieved by electrorefining chromium from an impure chromium anode…

A: Given: mass of chromium=10.5 kg, current= 39. amp. To find: Required time for electrolysis of…

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

A: Electrorefining is a process in which materials, usually metals, are purified by means of an…

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

A: Given: ScCl3 can be electrolyzed to form metallic Sc. We have to calculate the time required for the…

Q: A metal cube has a total surface area of 690 cm2 and is to be gold-plated to a thickness of 0,5 cm.…

A: The Faraday’s Laws of electrolysis gives the information about the quantitative aspects taken place…

Q: A metal cube has a total surface area of 690cm^2 and is to be gold plated to a thickness of 0.5cm.…

A: Given : Surface area to be covered = 690 cm2  Thickness of gold to be plated = 0.5 cm  Time taken =…

Q: It is desired to deposit 0.87 g of iron (MW = 55.85) from a FeCl3 solution by the passage of 2.5 A…

A: Given mass of of iron = 0.87 g MW for iron = 55.85 Current = 2.5 A Efficiency 85%

Q: Molten ScCl3 can be electrolyzed to form metallic Sc. For what duration should an electrolysis be…

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Q: Purification of chromium can be achieved by electrorefining chromium from an impure chromium anode…

A: In the process, the Cr3+ is converting to Cr. Hence the reaction taking place can be written as Cr3+…

Q: Oxygen Supply in Submarines Nuclear submarines can stay under water nearly indefinitely because they…

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Q: How long does it take to deposit a coating of gold 1.00 μm thick on a disk-shaped medallion 4.00 cm…

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Q: What the standard potential of an electrode of a cell containing the Sn²⁺/Sn and Br₂/Br⁻¹ couples?

A: The standard reduction potential of Sn2+ is -0.14 V. The standard reduction potential of Br2 is…

Q: (a) How many coulombs are required to plate a layer of nickel metal 0.125 mm thick on a coin with a…

A: (a) Calculate the volume of Nickel for plating the coin: The shape of nickel after electroplating…

Q: In the electrolysis of water, how long will it take to produce 1.000 × 102 L of H2 at STP (273 K and…

A: Volume of H2 produced = 100 L at STP i.e P = 1 bar = 0.987 atm and T = 273 K.

Q: 2V is applied across an electrolytic cell containing 1.0M NaNO3. What reaction occurs at the anode?…

A: NOTE : Since you've posted multiple sub-parts,we're solving first three sub-parts for you. To get…

Q: Molten ScCl3 can be electrolyzed to form metallic Sc. For what duration should an electrolysis be…

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

A: Given-> Current (I) = 2.99 ampere Weight of Ca= 23.5 gm

Q: Determining molar mass by electrolysis. An electrolysis cell containing MSO4 solution is operated…

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Q: SIiver can be electroplated at the cathode of an electrolysis cell by the half-reaction: Ag+(aq) +e-…

A: According to the question, we need to calculate the mass of silver deposited when current of 6.4…

Q: In the electrolysis of water, how long will it take to produce 1.000 × 102 L of H2 at STP (273 K and…

A: According to ideal gas law, PV = nRT where P = pressure V = volume n = moles R = gas constant =…

Q: Show mathematically whether changes in Q have a large effect on Ecell (standard electrode cell )at…

A: Relation of Gibb's free energy with Q: ∆G=∆G∘+RTlnQ This is under non standard conditions. Relation…

Q: Potentiometric methods of analysis are based upon measurements of the potential of electrochemical…

A: The potentiometry technique involves the measurement of cell potentials under conditions of no…

Q: It was observed that the applied voltage during electrolysis changes depending on the concentration…

A: Faraday's law explains that the mass of ions discharged or formed from an electrolyte i.e. W is…

Q: Using the electrochemical data found at the top of the Canvas page, calculate the equilibrium…

A: Given reaction is :  In (s) + Md3+ (aq) <----------> In+ (aq) + Md2+ (aq)  Calculate the value…

Q: [K;Fe(CN)s] (mM) limiting current (µA) 2.0 127 4.0 252 6.0 376 8.0 500 10.0 624

A: The two major types of calibration are- 1. One point calibration which involves the use of standard…

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

A: Answer = 1268.9 min

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: What is the electrical current, in Amperes, that must be applied if 6.50 g Ag is deposited at the…

A: Answer:- This question is answered by using the simple concept of electrolysis which involves the…

Q: A container made of steel, having base dimensions of 100 x 150 mm and a wall thickness of 10 mm is…

A: Solution Corrosion is one in every of the foremost common phenomena that we have a tendency to…

Q: The maximum corrosion current density in a steel sheet coated with zinc and exposed to seawater is…

A: We have: The maximum corrosion current density in a steel coated with zinc= 5 mA/m2 we need to…

Q: You would like to produce a gold-plated coin by plating gold onto a penny 1.90 cm in diameter. How…

A: Given : radius of coin = 1.9 cm = r And thickness of gold required = 0.79 mm = 0.079 cm = t…

Q: How long would it take to electrodeposit all the Cu2+ in 0.200 L of 0.210 M CuSO4 solution with an…

A:

Q: How long does it take to deposit a coating of gold 1.00 µm thick on a disk-shaped medallion 4.00 cm…

A:

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

A: Given: The amount of current passed through the solution for electrolysis is 1.44 A. The mass of Ca…

Q: In the electrolysis of water, how long will it take to produce 1.00 × 102 L of H2 at STP (273 K and…

A: During the electrolysis of water, H2 molecules are produced at cathode. Number of moles of H2…

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

A: GIVEN:  Mass of nickel=12.5KgCurrent passed through the cell=32.5 A. To Solve: calculate time in…

Q: Calculate the potential of a zinc electrode in a 0.0500 M solution of Zn (NO3) 2 ?

A: