A-D A. How many miles of Cu2+ is present in the solution? B. How many miles...
How many coulombs (C) of charge are required to cause reduction of 0.25 mole of Cu2+ to Cu? Hint: 1 mol of electrons = 96500C/mol In the reaction of Cu2+ to Cu,2 moles of electrons are gained 2.4x104C 0.50 € 0.25 14.8× 104C 1.2 x 10°C
50 mL of a 0.050 M solution of Cu2+ was reduced to solid copper. How many coulombs had passed when the Cu2+ was completely reduced to Cu(s)? Use 2 significant figures. Please show all work, thank you!
How many moles of copper II ion, Cu2+, are present in 200 mL of a .250 M solution of CuSO4?
The cathode compartment of a copper concentration cell contains 0.500 L of 1.00 M [Cu2+] solution while the anode compartment contains 0.800 L of 0.0500 M [Cu] with a copper electrode in each compartment. How many Coulombs of electric charge can the cell produce before the compartments reach equilibrium at 25°C?
How many kg of Ni can be produced from a solution of Ni2+ by a current of 1200 amps over a period of 36 hours? F = 96,485 amp-sec / mole e- Ni = 58.69 g/mol What is n for this reaction? _________ How many moles of electrons were transferred? _____________ How many moles of Ni were produced? _______________ How many kg of Ni were produced? ________________ Is this an oxidation or a reduction process? ________________
1. How many moles are present in 1.51 x 1023 molecules of HCl? A. 9.12 mol B. 0.251 mol C. 3.99 mol D. 146 mol 2. Ions can be formed from atoms by losing or gaining electrons. Select the alternative that states the correct number of protons, neutrons, and electrons in Cu2+ with mass number 63. A. 29 protons, 34 neutrons, 31 electrons B. 29 protons, 34 neutrons, 27 electrons C. 27 protons, 29 neutrons, 29 electrons D. 29 protons,...
how many miles of KOH are present in 67.2 mL of 0.487 M KOH QUESTION 2 How many moles of KOH are present in 67.2 mL of 0.487 M KOH? a. 0.487 mol 6.3.27 x 10-2 mol O c. 1.38 x 10-1 mol d. 32.7 mol e. 137 mol
The Purification of copper can be achieved by electrorefining copper from an impure copper anode onto a pure copper cathode in an electrolytic cell. How many hours will it take to plate 16.5 kg of copper onto the cathode if the current passed through the cell is held constant at 35.0 amperes? Assume the copper in the electrolytic solution is present as Cu2+. (Faraday’s Constant = 96500 Coulombs/mol e–).
could you do all three, please " How many grams of salt are present in 13.5 g of a 2.56 % salt solution? How many grams of sugar and how many grams of water are needed to prepare 250.00 g ofa 1.70 % w/w sugar solution? . 17.5 g of sugar is dissolved in 200.0 g of water. What is the percent by mass concentration of the sugar solution?
i need help with d.) and e.) solve using dimensional analyais LOW EXPERIMENT 19 ELECTROLYTIC CELLS Name HOMEWORK EXERCISES 1. A current of 0.50 amperes flowed through a cell for 2.0 hours in which Cuso, is the electrolyte and a copper electrode is present. a. Write the oxidation reaction (anode) for the cell. Cuis) 2+ Cu + Ze- (49) b. Write the reduction reaction (cathode) for the cell. Curagt 2e → Cues) c. How many coulombs of electricity are generated?...