30. What volumes of H₂ (g) and O₂ (g) at STP are produced from the electrolysis of water by a current of 2.50 A in 15.0 minutes?

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
Chapter17: Electrochemistry
Section: Chapter Questions
Problem 77AP
icon
Related questions
Question

PLESE ANSWER QUESIN NUM 30

30.
31.
32.
33.
(d)
Cl + e
Cl²-
What volumes of H₂ (g) and O₂ (g) at STP are produced from the electrolysis of
water by a current of 2.50 A in 15.0 minutes?
→
An unknown metal M is reduced by electrolysis from a solution of M(NO3)3. It
took 74.1 s for a current of 2.00 A to plate out 0.107 g of the metal. Identify the
metal.
An aqueous solution contains a mixture of cations at the following concentrations.
[Cd²+] =
= 1.0 M
[Fe²+] = 0.10 M
[Ni²+] = 1.0 x 10-6 M
In which order will these metal cations be reduced if an applied voltage to the
solution is gradually increased?
Consider the electrolysis of a solution that is 1.0 x 10³ M in Ag₂SO4 and
1.0 x 10¹¹ M in ZnSO4 with pH = 2.000.
(a)
(b)
Calculate the minimum voltage needed to plate silver metal at the cathode.
Will it be possible to plate zinc metal at the cathode once the concentration
of Agt has been reduced to a sufficiently low value?
Transcribed Image Text:30. 31. 32. 33. (d) Cl + e Cl²- What volumes of H₂ (g) and O₂ (g) at STP are produced from the electrolysis of water by a current of 2.50 A in 15.0 minutes? → An unknown metal M is reduced by electrolysis from a solution of M(NO3)3. It took 74.1 s for a current of 2.00 A to plate out 0.107 g of the metal. Identify the metal. An aqueous solution contains a mixture of cations at the following concentrations. [Cd²+] = = 1.0 M [Fe²+] = 0.10 M [Ni²+] = 1.0 x 10-6 M In which order will these metal cations be reduced if an applied voltage to the solution is gradually increased? Consider the electrolysis of a solution that is 1.0 x 10³ M in Ag₂SO4 and 1.0 x 10¹¹ M in ZnSO4 with pH = 2.000. (a) (b) Calculate the minimum voltage needed to plate silver metal at the cathode. Will it be possible to plate zinc metal at the cathode once the concentration of Agt has been reduced to a sufficiently low value?
Expert Solution
steps

Step by step

Solved in 5 steps

Blurred answer
Knowledge Booster
Electrolysis
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
Principles of Modern Chemistry
Principles of Modern Chemistry
Chemistry
ISBN:
9781305079113
Author:
David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:
Cengage Learning
General Chemistry - Standalone book (MindTap Cour…
General Chemistry - Standalone book (MindTap Cour…
Chemistry
ISBN:
9781305580343
Author:
Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:
Cengage Learning
Chemistry: The Molecular Science
Chemistry: The Molecular Science
Chemistry
ISBN:
9781285199047
Author:
John W. Moore, Conrad L. Stanitski
Publisher:
Cengage Learning
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Fundamentals Of Analytical Chemistry
Fundamentals Of Analytical Chemistry
Chemistry
ISBN:
9781285640686
Author:
Skoog
Publisher:
Cengage