Formative Assessment 4.3 Instruction: Clearly show all the necessary solutions. 1. A voltaic cell based on the reaction between aqueous Br2 and vanadium (III) ions has Ecell = 1.39 V: Br,(aq) + 2V³*(aq) + 2H,O(1) 2VO²*(aq) + 4H*(aq) + 2B1¯(aq) What is E, the standard electrode potential for the reduction of VO2* to V3+? vanadium

Formative Assessment 4.3 Instruction: Clearly show all the necessary solutions. 1. A voltaic cell based on the reaction between aqueous Br2 and vanadium (III) ions has Ecell = 1.39 V: Br,(aq) + 2V³(aq) + 2H,O(1) 2VO²(aq) + 4H(aq) + 2B1¯(aq) What is E, the standard electrode potential for the reduction of VO2 to V3+? vanadium

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

BALANCING REDOX REACTIONS, VOLTAIC CELL AND ELECTROLYSIS 1. A student constructed a voltaic cell using nickel and lead as electrodes. He also used 0.50 M Ni(NO3)2 as the anolyte and 0.25 M Pb(NO3)2 as the catholyte. Ni2+ (aq) + 2e → Ni(s), Eºred = -0.25 V Pb2+ (aq) + 1) + 2e → Pb(s), Ered. = -0.13 V A. Write the balanced reaction occurring in the voltaic cell. Write your answers in your solution sheet. B. Compute the standard cell potential, Eºcell- C. Calculate the potential at 28 °C, Ecell. D. If the concentration of Pb(NO3)2 solution used was increased, what will be the effect on the measured potential? (increase, decrease, no effect)
We will now consider the reaction of our experiment. The two half reactions for electrolysis of water are: _-) 2H₂O(l) + 2e¯¯ →>> H₂(g) + OH¯(aq) nd C) H₂O(l) → 2H+ (aq) + 1/2O₂(g) + 2e¯ The experiment is set up such that two connected funnels contain 50 mL of 0.5 M K₂SO4 and Universal Indicator. An electrode is then placed in each funnel, and an electric current is applied (Figure 1). (+) (-)
Out of the following statements about galvanic cells that you use in a laboratory determine which one is false 1 . you need a salt bride to determine electroneutrality 2. If you switch the voltmeter leads between the cathode and anode it will change the sign of the observed charge 3. In a Cu^2+ / Cu(s) (aq) half cell, Cu(s) would be the electrode 4. Eocell=Eoanode+Eocathode
1:18 Question 14 of 17 The standard cell potential E°(cell) is +0.34 V for the redox reaction 2 In(s) + 6 H*(aq) → 2 In³+ (aq) + 3 H₂(g). 1 4 7 +/- Determine Eº for the half-reaction In³+ (aq) + 3 e → In(s). 2 5 8 V 3 60 Submit 9 O Tap here or pull up for additional resources XU x 100
6) Write the anode and cathode half reactions and calculate E°cell for the following redox reaction; Sn(s) + 2Cu²“(aq) → Sn²*(aq) + 2Cu*(aq) Ered(Cư-/Cu*)= 0.15 V E red(Sr*/Sn) = -0.14 V
Identify each of the following half-reactions as either an oxidation half-reaction or a reduction half-reaction. Write a balanced equation for the overall redox reaction. Use smallest possible integer coefficients.
6, Which of the following statements is false about zinc–copper voltaic cell : Zn(s) | Zn2+(1.0 M) || Cu2+(1.0 M) | Cu(s) Group of answer choices A, Electrons flow through the external circuit from the zinc electrode to the copper electrode B, The mass of the zinc electrode increases during discharge C, Reduction occurs at the copper electrode D, The zinc electrode is the anode. E, The concentration of Cu2+ decreases during discharge. 7, What is the SI unit of potential difference? Group of answer choices joule ampere coulomb farad volt
4
Please answer letters D, E, F only in the attached pic
Enter your answer in the provided box. Calculate the emf of the following concentration cell: Mg(s) | Mg*(0.37 M) || Mg*(0.77 M) | Mg(s) V
If you watched the "Breaking Bad" video, the two components of the battery that he was manufacturing were mercuric oxide (HgO) and zinc. Here are the half reactions for this battery. Consider the following two half reactions: HgO (s) + H₂O (1) + 2e → Hg(s) + 2OH(aq) Eºr red = 0.0977 V Zn(OH)42 (aq) + 2e → Zn(s) + 4OH(aq) Ered = -1.19 V Take these two half reactions and make a full redox reaction. What is the expression for the reaction quotient (Q) when you're done? Q Q = [Zn(OH)² ][Hg] [OH-]²[Zn][HgO] [OH-] [Zn] [HO] [Zn(OH)2](Hg) Q = [OH-]2 Zn(OH)2 Zn(OH)2 [OH-]2
4) A voltaic cell is constructed using the reaction a) Sketch the voltaic cell. Zn (s) + Ni¹2 (aq) → Zn¹2 (aq) + Ni (s) b) Which half-reaction occurs at the anode? c) Which half-reaction occurs at the cathode? d) Calculate Eºcell.