Initial mass of copper electrode (g) 1.201g Final mass of copper electrode (g) 1.163g Initial mass of key (g) 8.464g Final mass of key (g) 8.525g Average current (A) 0.015 A Time of current application (s) 30 min   Use your current vs. time data to calculate the theoretical number of moles of copper that should have plated out onto the brass key.

Q: Given the data below: ??2?7 (??)^2− + 14 ?^+ + 6 ?^− → ??(??)^3+ + 7 ?2?(?) ?°??? = 1.33 ? ??(??)^2+…

A: Reactions are: Cr2O72− + 14H++ 6e– → 2Cr3+ + 7H2O  Ered∘=1.33V Cu2+ + 2e- → Cu  Ered∘=0.34V

Q: Determine the molar mass (amu) of Metal (M) if it took 2.21 minutes for a current of 1.24 A to plate…

A:

Q: A “dead” 12-Volt lead/acid storage battery has 12.80 g of PbSO4 (molar mass = 303.3 g), deposited on…

A: According to Faraday's first of electrolysis, the amount of substance liberated at a particular…

Q: The current reduces 0.2257 mol M, resulting in 11.5 g of metal being collected at the cathode. What…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: Determine the molar mass (amu) of Metal (M) if it took 2.91 minutes for a current of 1.2 A to plate…

A:

Q: A zinc bar weighing 3000g is attached to a buried iron pipe to protect the pipe from corrosion. An…

A:

Q: A potential of - 0.788 V is applied to a cell with Nernst Potential of -0.734 V. The internal…

A: We need to find the overpotential.

Q: A student uses a strip of metal in an electrolysis circuit in which the metal strip serves as the…

A:

Q: A cylindrical metal carries a current of 10 A. What will be its diameter, in mm, if the minimum…

A:

Q: Electrolytic Reduction of Cu2+ to Cu on the Surface of a Coin initial mass of coin: 5.6917 g…

A: Given: The initial mass of coin=5.6917 g The final mass of coin=5.7553 g    Coulombs…

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

A:

Q: an irregularly shaped metal part was made from a particular alloy was galvanized with zinc using a…

A: Given The amount of current (I) is 2.15 A The time is 2.2 hours The density of zinc is 7.410 g/cm3…

Q: A “dead” 12-Volt lead/acid storage battery has 4.30 g of PbSO4 (molar mass = 303.3 g), deposited on…

A:

Q: Volt- Wire meter Cd Ag Salt Bridge (1M Cd(NO,)2' A 100 milliliters 1 M AGNO3 \ 100 milliliters / The…

A: Answer:- This question is answered by using the simple concept of working of electrochemical cell in…

Q: Initial mass of copper electrode (g) 1.201g Final mass of copper electrode (g) 1.163g Initial…

A:

Q: The moving boundary method was applied to a solution of GdCl3 33.27 mmol/L at 25°C using LiCl. Using…

A: In the moving boundary method, the speed of displacement of the boundary is measured between two…

Q: Determine the mass of Sodium (Na) produced when a 295 amp current flows for 8 hr through a cell…

A:

Q: Suppose a current of 590.mA flows through a copper wire for 277. seconds. Calculate how many moles…

A: It is given that:Amount of current flowing through the copper wire = 590 mATime = 277 seconds

Q: Galvanized nals are iron nails that have been plated with zine to prevent rusting. The relevant…

A:

Q: Suppose a current of 90. A flows through a copper wire for 145. seconds. Calculate how many moles of…

A: Given- Current ( I ) = 90 Time ( t )= 145 seconds Find mole = ??

Q: How long (in minutes) should a current of 6 amperes be applied through a solution of silver nitrate…

A: It is an application of Faraday  first law of electrolysis

Q: Initial mass of copper electrode (g) 1.201g Final mass of copper electrode (g) 1.163g Initial…

A: Given information: Initial mass of copper electrode (g) = 1.201g Final mass of copper electrode (g)…

Q: ELECTROCHEMISTRY: Determine the molar mass (amu) of Metal (M) if it took 1.66 minutes for a current…

A:

Q: Using a current of 4.75 A, how many minutes does it take to plate onto a sculpture 1.50 grams of Cu…

A:

Q: How would changing the reference electrode affect a Standard Reduction Potential? there would be no…

A: A reference electrode is an electrode which has a stable and well-known electrode potential the…

Q: A spoon is to be electroplated with Ag(s) using a solution containing Ag+ ions. If 32.4 grams of…

A: The amount of substance deposited on the electrode on passing electric current is given by the…

Q: 405−mL solution of NaCl was electrolyzed for 5.80 min. If the pH of the final solution was 12.23,…

A:

Q: ELECTROCHEMISTRY: Determine the molar mass (amu) of Metal (M) if it took 1.12 minutes for a current…

A: Given: Time = 1.12 minutes = 1.12×60 sec Correct = 1.22 A Mass of the metal M = 0.0896 g

Q: When a lead acid car battery is recharged by the alternator, it acts essentially as an electrolytic…

A: Answer  = 3.50 grams

Q: 18 « < 4 o Object Object AGNO3(aq) Zn(NO3)2(aq) Diagram 1 Diagram 2 Object Metal Used Amount of…

A: Explanation to the correct option is given below.

Q: ELECTROCHEMISTRY: Determine the molar mass (amu) of Metal (M) if it took 1.07 minutes for a current…

A:

Q: A student deposited 2.50 g of zinc (65.39 g/mol) onto a sculpture from a ZnSO4 solution. The…

A: Given that : The mass of zinc deposited = 2.50 g Molar mass of Zn = 65.39 g/mol Current supplied =…

Q: Suppose that the concentration of Cat outside the cell is 10 and inside the cell is 0.01 mmol/liter.…

A: Given, [Ca2+]outside= 10 mmolL[Ca2+]inside = 0.01mmolL membrane voltage = +87  mV

Q: The partial pressure in atm required for half-cells that generate or consume gas for its standard…

A: Electroanalytical chemistry is a branch of analytical chemistry which pressurizes on the…

Q: The electronic materials corroded in the presence of water vapor and atmospheric pollutants. The…

A: Firstly we have to calculate the part B for answering the part a..

Q: The gold plating of a ceramic figurine requires a total of 4.19 g of solid gold.  If the current…

A: Given  Mass of solid gold required = w = 4.19 g Current being used is = I = 11.0 amperes how many…

Q: complete solution no need explanation Determine the molar mass (amu) of Metal (M) if it took 2.61…

A:

Q: A zinc bar weighing 3.0 kg is attached to a buried iron pipe to protect the pipe from corrosion. An…

A: Given, A zinc bar weighing 3.0 kg is attached to a buried iron pipe to protect the pipe from…

Q: What happens during the discharge of a lead-acid battery? A. The negative plate forms lead sponge.…

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

Q: 1.How many grams of NaCl is present on 5.0 mL of 1.0 % m/V NaCl solution?

A:

Q: ELECTROCHEMISTRY: Determine the molar mass (amu) of Metal (M) if it took 2.78 minutes for a current…

A:

Q: ELECTROCHEMISTRY: Determine the molar mass (amu) of Metal (M) if it took 1.14 minutes for a current…

A:

Q: EMISTRY: Determine the molar mass (amu) of Metal (M) if it took 2.21 minutes for a current of 1.24 A…

A: We have given that  Determine the molar mass (amu) of Metal (M) if it took 2.21 minutes for a…

Q: object with a surface area of 24.1 cm224.1 cm2 is to be plated with nickel. A current of 7.93 A7.93…

A: The total volume covered by Nickel=surface area×thickness of Nickel layer=24.1 cm2×9.71×10-3cm0.234…

Q: A zinc bar weighing 3.0 kg is attached to a buried iron pipe to protect the pipe from corrosion. An…

A: Given  Mass deposited = 3 kg Current  = 0.020 A Molar mass of zn = 65.38 g/mol

Q: ELECTROCHEMISTRY: Determine the molar mass (amu) of Metal (M) if it took 1.96 minutes for a current…

A: Metal is deposited as M3++3e-= 3M . We can infer that 3moles of electrons=3Faraday=3×96485 = 289455…

Q: A baby'sspoon with an area of 6.25 cm2 is plated with silver from AgN03 using a current of 2.00 A…

A: (a),

Potentiometric Titrations

Potentiometric titration is one of the important titration methods and is mainly carried out to characterize acid solutions. It follows a method similar to that of the normal titration technique, but the main difference is that there is no indicator used in the potentiometric titrations. Instead of using an indicator, electrodes are employed for monitoring the whole titration process. A scientist named Robert Behrend did the potentiometric titration for the first time, and it was done using the mercurous solution and potassium chloride.