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Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640

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Section
BuyFindarrow_forward

Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640
Chapter 19, Problem 44PS
Textbook Problem
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Which product, Ca or H2, is more likely to form at the cathode in the electrolysis of CaCl2? Explain your reasoning.

Interpretation Introduction

Interpretation:

It has to be identified whether the product Ca or H2 is more likely to form at cathode during electrolysis of CaCl2 and the reason should be explained.

Concept introduction:

Electrolysis:

It is a decomposition of ionic compounds by passing electricity through molten compounds or aqueous solutions of compounds.

Electricity used to produce chemical changes. The apparatus used for electrolysis is called an electrolytic cell.

Explanation of Solution

During the electrolysis process oxidation occurs at anode and reduction occurs at cathode.

At cathode, we need to ease of reduction of Ca or H2.

Based on E0 values much more difficult to reduce Ca2+ Ca than H2H2, and the electrolysis of a CaC

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Chapter 19 Solutions

Chemistry & Chemical Reactivity
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Ch. 19.3 - Which of the following statements is correct for...Ch. 19.3 - 2. You can determine if an automobile lead-based...Ch. 19.4 - (a) Rank the following metals in their ability to...Ch. 19.4 - The net reaction that occurs in a voltaic cell is...Ch. 19.4 - 2. Which metal in the following list is easiest to...Ch. 19.4 - Determine which of the following redox equations...Ch. 19.4 - A lithium ion battery produces a voltage of 3.6 V....Ch. 19.4 - Use the energy produced by the combustion of...Ch. 19.4 - What mass of lithium ion batteries would produce...Ch. 19.5 - A voltaic cell is set up with an aluminum...Ch. 19.5 - Check Your Understanding The half-cells Fe2+(aq,...Ch. 19.5 - 1. Calculate Ecell at 298 K for a cell involving...Ch. 19.6 - The following reaction has an E value of 0.76 V:...Ch. 19.6 - Calculate the equilibrium constant at 25 C for the...Ch. 19.6 - 1. In Appendix M, the following standard reduction...Ch. 19.7 - Predict the chemical reactions that will occur at...Ch. 19.7 - You have a solution containing several metal ions,...Ch. 19.8 - 1. Calculate the mass of O2 produced in the...Ch. 19.8 - 1. If you wish to convert 0.0100 mol of Au3+ (aq)...Ch. 19.8 - If an electrically insulating material, such as...Ch. 19.8 - Use standard reduction potentials to determine...Ch. 19.8 - Use standard reduction potentials to determine...Ch. 19.8 - The overall reaction for the production of Cu(OH)2...Ch. 19.8 - Assume the following electrochemical cell...Ch. 19 - Write balanced equations for the following...Ch. 19 - Write balanced equations for the following...Ch. 19 - Balance the following redox equations. All occur...Ch. 19 - Balance the following redox equations. All occur...Ch. 19 - Balance the following redox equations. All occur...Ch. 19 - Balance the following redox equations. 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(a) Zn(s) +...Ch. 19 - Magnesium metal is oxidized, and silver ions are...Ch. 19 - You want to set up a series of voltaic cells with...Ch. 19 - You want to set up a series of voltaic cells with...Ch. 19 - Which of the following reactions is (arc) product...Ch. 19 - In the table of standard reduction potentials,...Ch. 19 - In the table of standard reduction potentials,...Ch. 19 - Four voltaic cells are set up. In each, one...Ch. 19 - The following half-cells are available: (i)...Ch. 19 - The reaction occurring in the cell in which Al2O3...Ch. 19 - A cell is constructed using the following...Ch. 19 - A potential of 0.142 V is recorded (under standard...Ch. 19 - What is the value of E for the following...Ch. 19 - The standard potential, E, for the reaction of...Ch. 19 - An electrolysis cell for aluminum production...Ch. 19 - Electrolysis of molten NaCl is done in cells...Ch. 19 - A current of 0.0100 A is passed through a solution...Ch. 19 - A current of 0.44 A is passed through a solution...Ch. 19 - The total charge that ran he delivered by a large...Ch. 19 - Chlorine gas is obtained commercially by...Ch. 19 - Write equations for the half-reactions that occur...Ch. 19 - The products formed in the electrolysis of aqueous...Ch. 19 - Predict the products formed in the electrolysis of...Ch. 19 - In the electrolysis of HNO3(aq), hydrogen is...Ch. 19 - The metallurgy of aluminum involves electrolysis...Ch. 19 - Two half-cells, Pt | Fe3+(aq. 0.50 M), Fe2+(aq,...Ch. 19 - A voltaic cell is set up utilizing the reaction...Ch. 19 - Calculate the cell potential for the following...Ch. 19 - A voltaic cell set up utilizing the reaction Cu(s)...Ch. 19 - Two Ag+(aq) | Ag(s) half-cells are constructed....Ch. 19 - Calculate equilibrium constants for the following...Ch. 19 - Calculate equilibrium constants for the following...Ch. 19 - Use the table of standard reduction potentials...Ch. 19 - Use the table of standard reduction potentials...Ch. 19 - Write balanced equations for the following...Ch. 19 - Balance the following equations involving organic...Ch. 19 - A voltaic cell is constructed in which one...Ch. 19 - An expensive but lighter alternative to the lead...Ch. 19 - The specifications for a lead storage battery...Ch. 19 - Manganese may play an important role in chemical...Ch. 19 - You want to use electrolysis to plate a...Ch. 19 - Iron(II) ion undergoes a disproportionation...Ch. 19 - Copper(I) ion disproportionates to copper metal...Ch. 19 - The simplest way to write the reaction for...Ch. 19 - A lithium-ion camera battery is rated at 7500 mAh....Ch. 19 - Consider an electrochemical cell based on the...Ch. 19 - An old method of measuring the current flowing in...Ch. 19 - A silver coulometer (Study Question 106) was used...Ch. 19 - Four metals, A, B, C, and D, exhibit the following...Ch. 19 - A solution of KI is added dropwise to a pale blue...Ch. 19 - The amount of oxygen, O2, dissolved in a water...Ch. 19 - Fluorinated organic compounds are used as...Ch. 19 - The free energy change for a reaction, rG, is the...Ch. 19 - A hydrogen-oxygen fuel cell operates on the simple...Ch. 19 - (a) Is it easier to reduce water in acid or base?...Ch. 19 - Living organisms derive energy from the oxidation...

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