1. Construct the potential-pH (Pourbaix) diagram for zinc using the following reactions and assuming the activity of all dissolved substances (i.e. any metal cations or anions) is 106. Label the stable species in each region. Designate regions as Active (Corrosion), Passive, or Immune. Ranges for potential -2.5 VSHE to +2 VSHE (Y-axis) and for pH -2 to 14 (X-axis) while plotting the results. {1} Zn²++2e−=Zn(s) (E。= -0.764 V vs.SHE) {2} ZnO(s)+2H++2e¯¯=Zn(s)+H₂O (E。=-0.439 V vs.SHE) {3} ZnO2+4H+2e¯=Zn(s)+ 2H2O (E0= +0.441V) {4}Zn²++H20=Zn0+2H+ (equilibrium constant = 3.16 X 10-³) {5} ZnO+H20=ZnO₂²+2H+ (equilibrium constant = 1.58 X 10-30)

1. Construct the potential-pH (Pourbaix) diagram for zinc using the following reactions and assuming the activity of all dissolved substances (i.e. any metal cations or anions) is 106. Label the stable species in each region. Designate regions as Active (Corrosion), Passive, or Immune. Ranges for potential -2.5 VSHE to +2 VSHE (Y-axis) and for pH -2 to 14 (X-axis) while plotting the results. {1} Zn²++2e−=Zn(s) (E。= -0.764 V vs.SHE) {2} ZnO(s)+2H++2e¯¯=Zn(s)+H₂O (E。=-0.439 V vs.SHE) {3} ZnO2+4H+2e¯=Zn(s)+ 2H2O (E0= +0.441V) {4}Zn²++H20=Zn0+2H+ (equilibrium constant = 3.16 X 10-³) {5} ZnO+H20=ZnO₂²+2H+ (equilibrium constant = 1.58 X 10-30)

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter15: Acid–base Equilibria

Section: Chapter Questions

Problem 82AP

See similar textbooks

Similar questions

[References] Use the References to access important values if needed for this question. Write the net ionic equation for the acid-base hydrolysis equilibrium that is established when sodium cyanide is dissolved in water. (Use the lowest possible coefficients. Be sure to specify states such as (aq) or (s). If a box is not needed, leave it blank.) + H₂O(1) This solution is Submit Answer Topics] Ⓒ + Retry Entire Group 9 more group attempts remaining
This is an unknown solution which comprises of several ions possible for analysis. From the given information, determine which ions are present. Use + for positive, - for negative, or ? for insufficient information. An unknown solution containing the ions listed to the right was found: For Group I Cations: 1). A white precipitate was generated when 2 drops of 6M HCl solution was added to the unknown solution test tube. 2). Di water was added to the solution from part 1, and then the ppt was separated from the supernatant. The ppt was then washed with DI water few times to make sure is ppt is clean. 3). On the ppt separated from part 2 excess 6M NH3 was added and as a result all the ppt was dissolved. For Group III Cations: 4). An addition of Excess 6M NH3 led to a basic solution and a ppt. The ppt was then separated from the supernatant. 5). When Excess 6M NaOH was…
Answer both questions please
A 295-mL solution of NaCl was electrolyzed for 8.70 min. If the pH of the final solution was 12.05, calculate the average current used. A.
Calculate the activity of Al3+ in a solution that is .0547M in Al2(SO4)3.
1:26 PM Online teaching and X now.com/ilrn/takeAssignment/takeCovalentActivity.do?locator assignment-take&takeAssignmentSessionLocator ags Review Topics] References Use the References to access important values if needed for this question. The acid ionization constant for Cu(H20)6 (aq) is 1.0x10. Calculate the pH ofa 0.0208 M solution of 2+ Cu(NO3)2 pH = Submit Answer Retry Entire Group 4 more group attempts remaining Visited Next O verizon
Considering an experiment of using electrolysis to make bleach: (a) What would the effect be of changing the salt concentration and current on the final concentration of bleach? (b) What are the factors and tradeoffs (energy, time, etc.) to consider between using a lower current and higher current? Which would be preferred and why?
Complete and balance the following half-reaction in acidic solution. Be sure to include the proper phases for all species within the reaction ReO4 -(aq) +IO- (aq) - to IO3 - (aq) +Re(s)
Please give three examples of metals which are reactive, moderately reactive and non-reactive to the HCl acid solution and write the reactions.
17
Q4. If an electrolysis experiment, 1.46g of zinc is deposited on one of the electrodes from a zinc sulphate solution. If the electric current used is 1.2A for a time of one hour, calculate the mass of a zinc atom. Electric charge on an electron= 1.6 × 10 to-19 C.
Please answer the question in detail with explanation