x 10 Things I Hate About Yo b Answered: A battery can provi Digital Resources for Chemistn x O sw5_25989_1.jpg (700x536) Smartwork5 -> A sw5.wwnorton.com/problemsets/filemanager/userfiles/ctcox@stanford.edu/sw5_25989_1.jpg 14 12 10 8 4 Volume of strong base (mL) 8:22 PM O Type here to search 3/11/2020 Hd

x 10 Things I Hate About Yo b Answered: A battery can provi Digital Resources for Chemistn x O sw5_25989_1.jpg (700x536) Smartwork5 -> A sw5.wwnorton.com/problemsets/filemanager/userfiles/ctcox@stanford.edu/sw5_25989_1.jpg 14 12 10 8 4 Volume of strong base (mL) 8:22 PM O Type here to search 3/11/2020 Hd

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter22: Bulk Electrolysis: Electrogravimetry And Coulometry

Section: Chapter Questions

Problem 22.27QAP

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Given the ff data at 25 C: cathode= AuNO3 anode= Hydrogen (conc. 1.01 M) In the photo attached is the table for ln [concentration of Au] against potential (V) for the electrochemical cells . It shows how the potential changes when concentration of the cathode is changed (ln concentration) 1. Determine E at y- intercept 2. Calculate delta G and Keq Thank you.
The E°cell = 0.135 V for the reaction3I2(s) + 5Cr2O72-(aq) + 34H+(aq) → 6IO3-(aq) + 10Cr3+(aq) + 17H2OWhat is Ecell if [Cr2O72-] = 0.014 M, [H+] = 0.21 M, [IO3-] = 0.00018 M, and [Cr3+] = 0.0039 M?Ecell =
(Please give clear handwritten answer) 0.1 M HNO3 solution at 298K was electrolyzed in Hittorf cell using platinum electrodes. After electrolysis, 34.2 mg of copper was deposited in coulometer which in series with the Hittorf cell. 50 mL of HNO3 solution was withdrawn from anode compartment after electrolysis and found to have a concentration of 0.0821 M. [Atomic mass Cu = 63]. (i) Find the transference number of H + and NO3 −. (ii) If 50 mL HNO3 solution was run off from cathode compartment, what would its concentration be?
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1. Thirty minutes (30 m) of electrolysis of a solution of CuSO4 produced 3.75 g of Cu at the cathode. Which of the following is true ? At Wt Cu=63.5 g/mol Eocell= 0.340 Vpls explain why it became the answer. a. Less than 30 mins is needed to produce 4 g of Cu at the cathode b. 0.300 volts is enough to start electrolysis. c. The total current used is 6.33 amp.2. Given : Ecell Mg2+(aq) + 2 e- -> Mg(s) Mg2 + |Mg = - 2.372 Sn4+(aq) + 2 e- -> Sn2+(aq) Sn2 + , Sn4 + |Pt = + 0.154 Cl2 (g) + 2 e- -> 2 Cl-(aq) Cl-| Cl2 |Pt = +1.36 Which of the following is best reducing agent for Cl2(g) ? a.Sn4+(aq) b.Mg2+(aq ) c.Mg(s) d.Sn2+(aq)
1) a) For an ion with positive valence, what does the ratio of concentration outside to inside need to be for the Nernst potential to be negative, 0, or positive ? b) If the value of K_out were changed to 160mM in a mammalian neuron, and the resting potential was -60 mV. Which way would potassium want to move? c) Keeping the temperature constant choose 5 values of K_in or K_out (keep one constant and vary the other) from K_in < K_out to K_in > K_out. Plot the Nernst potential vs (K_out over K_in) and use a log fit to fit the data (label your axes). What is the interpretation of the coefficient of the ln term?.
Due to COVID-19 coupled with erratic power supply from ZESCO, you decide to playaround with galvanic cells and you construct a zinc–copper battery operating at a zeroresistant small light emitting diode (L.E.D) at 25OC as follows:Zn | Zn2+(0.10 M) || Cu2+ (2.5 M) | Cu
Show your work, use general chemistry rules for significant figures. 7. The potential observed in the cell diagrammed below (Ecell) is +0.290 V with the hydrogen electrode being the physically positive electrode (as determined using a voltmeter). Calculate the Ksp for PbI2 from the data below. Pt(s) | H2(g) (1.00 atm), H+(aq) (1.00 M) || I–(aq) (0.050 M) | PbI2(s), Pb(s) 2H+(aq) + 2 e– ⇌ H2(g) E°=0.000V Pb2+(aq) + 2 e– ⇌ Pb(s) E° = –0.126 V
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Hittorf cells with silver-silver chloride electrodes were filled with HCl solution with a molality of 0.0106 mol / kg. 2 mA strong current flowed into the cell for 3 hours. At the end of the experiment, the solution at the cathode contained 51.7169 g water and 0.0267 g HCl. Find the transport numbers H + and Cl-
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