5. Zn +(s)3CuCuZn - 2e(s)2+2+(aq) +Table2eZnChart(aq)(s)Identify which half reaction is oxidation and which is reduction.2+Zn(aq)2+CuText(s)Shape Media CommentCu6. A gas has an initial volume of 22.4 Liters at STP. What is its volume if thefinal pressure is changed to 2.0 atm and the temperature is changed to 373 K?7. A gas has an initial volume of 40.0 Liters and an initial pressure of 760 torr.What is the final volume of the gas at the final pressure of 0.20 atmospheres?a. 20 Litersb. 200 Litersc. 160.0 Liters

A reaction will be the oxidation reaction if electrons removed from the reaction. However, reduction…

Answered: 5. Zn + Cu (s) Zn Cu (s) 2+ 2+ (aq) (s)…

5. Zn + Cu (s) Zn Cu (s) 2+ 2+ (aq) (s) Identify which half reaction is oxidation and which is reduction. (aq) + → Zn 2e → Zn 2e → 2+ (aq) 2+ Cu Cu (s)

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter17: Electrochemistry And Its Applications

Section: Chapter Questions

Problem 18QRT: For the reaction Cu2+(aq) + Zn(s) → Cu(s) + Zn2+ (aq), why can’t you generate electric current by...

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. Assign oxidation sates to all of the atoms in each of the following: a. NH3 b.CO C. CO2 d. NF3
For the reaction Cu2+(aq) + Zn(s) → Cu(s) + Zn2+ (aq), why can’t you generate electric current by placing a piece of copper metal and a piece of zinc metal in a solution containing CuCl2(aq) and ZnCl2(aq)?
Some metals, such as thallium, can be oxidized to more than one oxidation state. Obtain the balanced net ionic equations for the following oxidation reduction reactions, in which nitric acid is reduced to nitric oxide, NO. a Oxidation of thallium metal to thallium(I) ion by nitric acid. b Oxidation of thallium(I) ion to thallium(III) ion by nitric acid. c Oxidation of thallium metal to thallium(III) by nitric acid. [Consider adding the a and b equations.]
Follow the directions of Question 39 for the following half-reactions: 1. I2(s)+2e2I(aq) 2. Co3+(aq)+eCo2+(aq) 3. Cr2O72(aq)+14H+(aq)+6e2Cr3+(aq)+7H2O
For the following half-reactions, answer the questions below. Co3+(aq)+eCo2+(aq)E=+1.953VFe3+(aq)+eFe2+(aq)E=+0.769VI2(aq)+2e2I(aq)E=+0.534VPb2+(aq)+2ePb(s)E=0.127VCd2+(aq)+2eCd(s)E=0.402VMn2+(aq)+2eMn(s)E=1.182V (a) Which is the weakest reducing agent? (b) Which is the strongest reducing agent? (c) Which is the strongest oxidizing agent? (d) Which is the weakest oxidizing agent? (e) Will Pb(s) reduce Fe3+(aq) to Fe2+(aq)? (f) Will I-(aq) reduce Pb2+(aq) to Pb(s)? (g) Which ion(s) can be reduced by Pb(s)? (h) Which if any metal(s) can be oxidized by Fe3+(aq)?
A solution of copper(II) sulfate is electrolyzed by passing a current through the solution using inert electrodes. Consequently, there is a decrease in the Cu2+ concentration and an increase in the hydronium ion concentration. Also, one electrode increases in mass and a gas evolves at the other electrode. Write half-reactions that occur at the anode and at the cathode.
An electrolytic cell is set up with Cd(s) in Cd(NO3)2(aq) and Zn(s) in Zn(NO3)2(aq). Initially both electrodesweigh 5.00 g. After running the cell for several hours theelectrode in the left compartment weighs 4.75 g. (a) Which electrode is in the left compartment? (b) Does the mass of the electrode in the right compartmentincrease, decrease, or stay the same? If the masschanges, what is the new mass? (c) Does the volume of the electrode in the right compartment increase, decrease, or stay the same? If the volumechanges, what is the new volume? (The density of Cd is8.65 g/cm3.)
Write balanced equations for the following half-reactions. Specify whether each is an oxidation or reduction. (a) H2O2(aq) O2(g)(in acid) (b) H2C2O4(aq) CO2(g)(in acid) (c) NO3(aq) NO(g)(in acid) (d) MnO4(aq) MnO2(s)(in base)
Some metals, such as iron, can be oxidized to more than one oxidation state. Obtain the balanced net ionic equations for the following oxidation reduction reactions, in which nitric acid is reduced to nitric oxide, NO. a Oxidation of iron metal to iron(II) ion by nitric acid. b Oxidation of iron(II) ion to iron(III) ion by nitric acid. c Oxidation of iron metal to iron(III) by nitric acid. [Consider adding the a and b equations.]
Some calculators cannot display results of an antilog calculation if the power of 10 is greater than 99. This shortcoming can come into play for determining equilibrium constants of redox reactions, which are sometimes quite large. Solve the following expressions for K: (a) logK=45.63 , (b) logK=25.00 , (c) logK=20.63 . is the relationship among the three expressions and the three answers? How can you use this relationship to solve problems that exceed 1099 even if your calculator will not carry out the calculation directly?
. Balance each of the following half-reactions. a.I(aq)I2(s)b.O2(g)O2(s)c.P4(s)P3(s)d.Cl2(g)Cl(aq)
Four metals, A, B, C, and D, exhibit the following properties: (a) Only A and C react with 1.0 M hydrochloric acid to give H2(g). (b) When C is added to solutions of the ions of the other metals, metallic B, D, and A are formed. (c) Metal D reduces Bn+ to give metallic B and Dn+. Based on this information, arrange the four metals in order of increasing ability to act as reducing agents.

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