
Concept explainers
How much copper metal can be produced by

Interpretation:
The number of moles of copper metal deposited during the electrolysis of copper ion solution is to be determined.
Concept introduction:
The relation between the current, time taken and the charge is as follows:
Here,
is second, the S. I. unit of time, and C is coulomb, the S. I. unit of charge.
The relationship between the number of moles of electrons and the number of moles of metal is as follows:
Answer to Problem 1KSP
Solution: Option (b).
Explanation of Solution
The reduction half-reaction for copper metal is as follows:
Therefore, two moles of electrons are needed to reduce one mole of copper metal.
The number of moles of copper metal deposited after electrolysis when 1.85 A of current is passed for four hours, is determined as follows:
The number of moles of electrons required to reduce copper metal is calculated as follows:
Now, the number of moles of copper metal reduced is calculated as follows:
Hence, option (b) is correct.
Reason for incorrect options:
Option (a) is incorrect because on solving with the help of the above equation, the answers do not match with option (a).
Option (c) is incorrect because on solving with the help of the above equation, the answers do not match with option (c).
Option (d) is incorrect because on solving with the help of the above equation, the answers do not match with option (d).
Option (e) is incorrect because on solving with the help of the above equation, the answers do not match with option (e).
Hence, options (a), (c), (d), and (e) are incorrect.
Want to see more full solutions like this?
Chapter 19 Solutions
EBK CHEMISTRY
- By malonic or acetylacetic synthesis, synthesize 2-methylbutanoic acid (indicate the formulas of the compounds).arrow_forwardObtain 2-methylbutanoic acid by malonic or acetylacetic synthesis (indicate the formulas of the compounds involved).arrow_forwardEFFICIENTS SAMPLE READINGS CONCENTRATIONS Pigiadient) TOMATO SAUCE (REGULAR) TOMATO (REDUCED SALT) TOMATO SAUCE (REGULAR) TOMATO (REDUCED SALT) 58 6.274 3.898 301.7 151.2 14150 5.277 3.865 348.9 254.8 B 5.136 3.639 193.7 85.9 605 4.655 3.041 308.6 199.6 05 5.135 3.664 339.5 241.4 0139 4.676 3.662 160.6 87.6 90148 5.086 3.677 337.7 242.5 0092 6.348 3.775 464.7 186.4 PART3 5.081 3.908 223.5 155.8 5.558 3.861 370.5 257.1 4.922 3.66 326.6 242.9 4.752 3.641 327.5 253.3 50 5.018 3.815 336.1 256.0 84 4.959 3.605 317.9 216.6 38 4.96 3.652 203.8 108.7 $3 5.052 3.664 329.8 239.0 17 5.043 3.767 221.9 149.7 052 5.058 3.614 331.7 236.4 5.051 4.005 211.7 152.1 62 5.047 3.637 309.6 222.7 5.298 3.977 223.4 148.7 5.38 4.24 353.7 278.2 5 5.033 4.044 334.6 268.7 995 4.706 3.621 305.6 234.4 04 4.816 3.728 340.0 262.7 16 4.828 4.496 304.3 283.2 0.011 4.993 3.865 244.7 143.6 AVERAGE STDEV COUNT 95% CI Confidence Interval (mmol/L) [Na+] (mg/100 mL) 95% Na+ Confidence Interval (mg/100 mL)arrow_forward
- If we have two compounds: acetone (CH₃COCH₃) and acetic acid (CH₃COOH), applying heat to them produces an aldol condensation of the two compounds. If this is correct, draw the formula for the final product.arrow_forwardIf we have two compounds: acetone (CH3COCH3) and acetic acid (CH3COOH); if we apply heat (A), what product(s) are obtained?arrow_forwardQUESTION: Fill out the answers to the empty green boxes attached in the image. *Ensure you all incorporate all 27 values (per column)*arrow_forward
- You need to make a buffer by dissolving benzoic acid and sodium benzoate in water. What is the mass of benzoic acid that you would weigh out, in mg, to create 50 mL of a buffer at pH = 4.7 that will change pH no more than 0.10 units with the addition of 0.001 moles of acid or base? Enter just the answer without the units (mg) - just the number will do!arrow_forwardDraw the formula for 3-isopropylcyclopentane-1-carbonyl chloride.arrow_forwardQUESTION: Fill out the answers to the empty green boxes attached in the image. *Ensure you all incorporate all 27 values (per column)*arrow_forward
- Chemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningPrinciples of Modern ChemistryChemistryISBN:9781305079113Author:David W. Oxtoby, H. Pat Gillis, Laurie J. ButlerPublisher:Cengage LearningGeneral Chemistry - Standalone book (MindTap Cour...ChemistryISBN:9781305580343Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; DarrellPublisher:Cengage Learning
- Chemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningChemistry by OpenStax (2015-05-04)ChemistryISBN:9781938168390Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark BlaserPublisher:OpenStax




