Chemistry
4th Edition
ISBN: 9780078021527
Author: Julia Burdge
Publisher: McGraw-Hill Education
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Chapter 23, Problem 19QP
Interpretation Introduction
Interpretation:
The compounds that require
Concept introduction:
Electrolysis is a purification technique. It is only possible for electropositive elements.
Electropositive elements undergo electrolytic reduction as they are strong reducing agents.
The reduction takes place on the halide of the metal or anhydrous molten oxide. Some electropositive elements are not suitable for electrolytic reduction because of their solubility.
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Chemistry
Ch. 23 - Prob. 1QPCh. 23 - Prob. 2QPCh. 23 - Prob. 3QPCh. 23 - Prob. 4QPCh. 23 - Prob. 5QPCh. 23 - Prob. 6QPCh. 23 - Prob. 7QPCh. 23 - Describe with examples the chemical and...Ch. 23 - Prob. 9QPCh. 23 - Prob. 10QP
Ch. 23 - Prob. 11QPCh. 23 - Prob. 12QPCh. 23 - Prob. 13QPCh. 23 - Prob. 14QPCh. 23 - Prob. 15QPCh. 23 - Prob. 16QPCh. 23 - Prob. 17QPCh. 23 - Prob. 18QPCh. 23 - Prob. 19QPCh. 23 - Although iron is only about two-thirds as abundant...Ch. 23 - Prob. 21QPCh. 23 - Prob. 22QPCh. 23 - Prob. 23QPCh. 23 - Prob. 24QPCh. 23 - Prob. 25QPCh. 23 - Prob. 26QPCh. 23 - Prob. 27QPCh. 23 - Prob. 28QPCh. 23 - Prob. 29QPCh. 23 - Prob. 30QPCh. 23 - Prob. 31QPCh. 23 - Prob. 32QPCh. 23 - Prob. 33QPCh. 23 - Prob. 34QPCh. 23 - Prob. 35QPCh. 23 - Prob. 36QPCh. 23 - Prob. 37QPCh. 23 - Prob. 38QPCh. 23 - Prob. 39QPCh. 23 - Describe two ways of preparing magnesium chloride.Ch. 23 - Prob. 41QPCh. 23 - Prob. 42QPCh. 23 - Prob. 43QPCh. 23 - Prob. 44QPCh. 23 - Prob. 45QPCh. 23 - Prob. 46QPCh. 23 - Prob. 47QPCh. 23 - With the Hall process, how many hours will it take...Ch. 23 - Prob. 49QPCh. 23 - Prob. 50QPCh. 23 - Prob. 51QPCh. 23 - Prob. 52QPCh. 23 - Prob. 53QPCh. 23 - Prob. 54QPCh. 23 - Prob. 55QPCh. 23 - Prob. 56QPCh. 23 - Prob. 57QPCh. 23 - Prob. 58APCh. 23 - Prob. 59APCh. 23 - Prob. 60APCh. 23 - Prob. 61APCh. 23 - 23.62 A 0.450-g sample of steel contains manganese...Ch. 23 - Given that Δ G ( Fe 2 O 3 ) f o = − 741.0 kJ/mol...Ch. 23 - Prob. 64APCh. 23 - Prob. 65APCh. 23 - Prob. 66APCh. 23 - Prob. 67APCh. 23 - Write balanced equations for the following...Ch. 23 - Prob. 69APCh. 23 - Prob. 70APCh. 23 - Prob. 71APCh. 23 - Prob. 72APCh. 23 - Prob. 73APCh. 23 - Prob. 74APCh. 23 - Prob. 75APCh. 23 - Prob. 76APCh. 23 - Prob. 77APCh. 23 - Prob. 78APCh. 23 - Prob. 79APCh. 23 - 23.80 The electrical conductance of copper metal...Ch. 23 - Prob. 81APCh. 23 - Prob. 82APCh. 23 - Prob. 1SEPPCh. 23 - Prob. 2SEPPCh. 23 - Prob. 3SEPPCh. 23 - Prob. 4SEPP
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- Electrolysis of a solution of CuSO4(aq) to give copper metal is carried out using a current of 0.66 A. How long should electrolysis continue to produce 0.50 g of copper?arrow_forwardAluminum is produced commercially by the electrolysis of Al2O3 in the presence of a molten salt. If a plant has a continuous capacity of 1.00 million A, what mass of aluminum can be produced in 2.00 h?arrow_forwardHydrazine, N2H4, has been proposed as the fuel in a fuel cell in which oxygen is the oxidizing agent. The reactions are N2H4(aq) + 4 OH(aq) N2(g) + 4 H2O() + 4e O2(g) + 2 H2O() + 4e 4 OH(aq) (a) Which reaction occurs at the anode and which at thecathode? (b) What is the overall cell reaction? (c) If the cell is to produce 0.50 A of current for 50.0 h, calculate what mass in grams of hydrazine must be present. (d) Calculate what mass (g) of O2 must be available to reactwith the mass of N2H4 determined in part (c).arrow_forward
- Sodium perchlorate, NaClO4, is produced by electrolysis of sodium chlorate, NaClO3. If a current of 2.50 103 A passes through an electrolytic cell, how many kilograms of sodium perchlorate are produced per hour?arrow_forwardIn an analytical determination of arsenic, a solution containing arsenious acid, H3AsO3, potassium iodide, and a small amount of starch is electrolyzed. The electrolysis produces free iodine from iodide ion, and the iodine immediately oxidizes the arsenious acid to hydrogen arsenate ion, HAsO42. I2(aq)+H3AsO3(aq)+H2O(l)2I(aq)+HAsO42(aq)+4H+(aq) When the oxidation of arsenic is complete, the free iodine combines with the starch to give a deep blue color. If, during a particular run, it takes 65.4 s for a current of 10.5 mA to give an endpoint (indicated by the blue color), how many grams of arsenic are present in the solution?arrow_forward(a) Write equations for the half-reactions that occur at the cathode and the anode when an aqueous solution of KCl is electrolyzed. Which chemical species is oxidized, and which chemical species is reduced in this reaction? (b) Predict the products formed when an aqueous solution of CsI is electrolyzed.arrow_forward
- Using data in Appendix 1, estimate the temperature at which Fe2O3 can be reduced to iron, using hydrogen gas as a reducing agent (assume H2O(g) is the other product).arrow_forwardCalcium metal can be obtained by the direct electrolysis of molten CaCl2, at a voltage of 3.2 V. (a) How many joules of electrical energy are required to obtain 12.0 1b of calcium? (b) What is the cost of the electrical energy obtained in (a) if electrical energy is sold at the rate of nine cents per kilowatt hour?arrow_forwardA constant current of 1.25 amp is passed through an electrolytic cell containing a 0.050 M solution of CuSO4 and a copper anode and a platinum cathode until 3.00 g of copper is deposited. a How long does the current flow to obtain this deposit? b What mass of silver would be deposited in a similar cell containing 0.15 M Ag+ if the same amount of current were used?arrow_forward
- Answer the following questions by referring to standard electrode potentials at 25C. a Will oxygen, O2, oxidize iron(II) ion in solution under standard conditions? b Will copper metal reduce 1.0 M Ni2(aq) to metallic nickel?arrow_forwardUse data from Appendix J to calculate the enthalpy change and the Gibbs free energy change for the reduction of chromium(III) oxide by aluminum.arrow_forward
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Electrolysis; Author: Tyler DeWitt;https://www.youtube.com/watch?v=dRtSjJCKkIo;License: Standard YouTube License, CC-BY