The standard potential of the Zn2+/ Zn electrode is -0.76 V at 25e. The exchange current density

Question:

The standard potential of the Zn2+/ Zn electrode is -0.76 V at 25°e. The exchange current density for H+ discharge at platinum is 0.79 mA cm-2• Can zinc be plated on to platinum at that temperature? (Take unit activities.)

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Physical Chemistry

ISBN: 978-0716743880

7th Edition

Authors: Peter Atkins

See More Books

Question Posted: Mar 13, 2010 04:19 AM

See More Questions

The exchange current density for a PtIFe3+,Fel+ electrode is 2.5 mA cm-I. The standard potential of the electrode is +0.77 V. Calculate the current flowing through an electrode of surface area 1.0...
Can iron be deposited on a copper electrode from a unit activity acid solution at 25C?
Zinc is to be recovered from an ore containing zinc sulfide. The ore is first roasted with oxygen to produce zinc oxide, which is then leached with aqueous sulfuric acid to produce water-soluble zinc...
Why is an investment portfolio containing a mix of stocks and bonds less risky than one containing a single asset class? Because the markets for stocks and bonds tend to move in the same direction at...
Suppose that a steel of eutectoid composition is cooled to 675C (1250F) from 760C (1400F) in less than 0.5 s and held at this temperature. (a) How long will it take for the austenite-to-pearlite...
For the problem specified in the table, build upon the results of the original problem to obtain a Basic Load Rating for a ball bearing at C with a 95 percent reliability. The shaft rotates at 1200...
What difficulties do you think would be encountered in developing a computer program to implement the DUPLEX algorithm? For example, how efficient is the procedure likely to be for large sample...
Westbrook Co. predicts that it will use 225,000 gallons of material during the year. The material is expected to cost $10 per gallon. It anticipates that it will cost $40 to place each order. The...
Grouper Limited had net sales in 2023 of $2.1 million. At December 31, 2023, before adjusting entries, the balances in selected accounts were as follows: Accounts Receivable $261,300 debit; Allowance...
An online retailer is offering a new line of running shoes. The retailer plans to send out an e-mail with a discount offer to some of its existing customers and wants to know if it can use data...
The over potential for hydrogen evolution on cadmium is about 1 Vat current densities of 1mA cm3. Why may cadmium be deposited from aqueous cadmium sulfate?
Calculate the maximum (zero-current) potential difference of a lead-acid cell, and the maximum possible power output when 100 mA is drawn at 25e.
In which of the following circumstances would a potential component unit always be fiscally dependent upon a city? a. The city is the sole source of revenue of the potential component unit. b. The...
At what separation will two charges, each of magnitude 6 . 4 0 \ mu C , exert a force of 3 . 6 0 N on each other? Give your answer in meters. ( k = 1 / 4 \ pi \ epsi 0 = 9 . 0 0 \ times 1 0 9 N m 2 /...
A ball is thrown straight up into the air with an initial upward velocity. Suppose we call the up direction positive. What happens to its velocity from the time it is released to the time it reaches...
Vector A, of magnitude 376.8 and direction 0=214.04, has x- and y-components - 312.2 and -210.9. See the figure to the right. Change 214.04 to 180.00 and find the components of the vector. The...
Determine theoretical. According to the theory, for light refracting from water into air, the critical angle will Occur at an incident angle Oc where n sin(0)= sin(90). Using your experimental value...
Use + to depict the forward direction and use to depict the backwards direction. Using the graph above, calculate the average velocity of the object from Os to 5 s. av. velocity = Using the graph...
Which category of education contains the most people?
Illini Company, Inc. Balance Sheet as of 12/31/20X0 Assets Current Assets: Cash $1,500,000 Accounts receivable, net 18,000 Inventory 50,000 Total current assets 1,568,000 Equipment 90,000 Goodwill...
Use the guidelines of this section to sketch the curve. y = 1/(1+ e x ) Data from section 4.5 GUIDELINES FOR SKETCHING A CURVE The following checklist is intended as a guide to sketching a curve y =...
(a) The pH of 0.015 m HNO 2 (aq) was measured as 2.63. What are the values of K a and pK a of nitrous acid? (b) The pH of 0.10 m C 4 H 9 NH 2 (aq), butylamine, was measured as 12.04. What are the...
Predict the potential of each of the following cells: 3+ (a) Cr(s) Cr+ (aq, 0.37 mol-L-)||Pb+ (aq, 9.5 10 mol-L-) Pb(s) (b) Pt(s) H(g, 2.0 bar) |H* (pH = 3.5)||Cl(aq, 0.75 molL-)| HgCl (s) Hg(1) (c)...
Calculate the volume of 0.120 m HCl(aq) required to neutralize (a) One-half and (b) All the hydroxide ions in 25.0 mL of 0.412 m KOH(aq). (c) What is the molar concentration of Cl ions at the...
Pangasa Co. paid its annual worker accident insurance premium of $48,000 on its manufacturing facility in January. The company expects two worker accidents to happen during the year, and to make...
3. The game of baseball is often analyzed using Markov models. The state of the game can be represented by listing bases that have runners and keeping track of how many outs there are. There are...
Thornton Electronics currently produces the shipping containers it uses to deliver the electronics products it sells. The monthly cost of producing 9,300 containers follows. Unit-level materials...

The standard potential of the Zn2+/ Zn electrode is -0.76 V at 25e. The exchange current density

Question:

Step by Step Answer:

Zn can be deposited if the H discharge current is less than about 1 mA cm ...View the full answer

Physical Chemistry

Students also viewed these Physical Chemistry questions