PLESE ANSWER QUESIN NUM 30 30.31.32.33.(d)Cl + eCl²-What volumes of H₂ (g) and O₂ (g) at STP are produced from the electrolysis ofwater 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. Ittook 74.1 s for a current of 2.00 A to plate out 0.107 g of the metal. Identify themetal.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 MIn which order will these metal cations be reduced if an applied voltage to thesolution is gradually increased?Consider the electrolysis of a solution that is 1.0 x 10³ M in Ag₂SO4 and1.0 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 concentrationof Agt has been reduced to a sufficiently low value?

The anode reaction in the electrolysis of water is 2 H2O(l)→O2(g)+4H+(aq)+4e- The cathode reaction…

Answered: 30. What volumes of H₂ (g) and O₂ (g)…

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 76AP

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Concept explainers

Electrolysis

Electrolysis is defined as the process of breaking down ionic compounds into their constituent elements by passing a direct electric current through the compound in a fluid state. The cathode reduces cations, while the anode oxidizes anions. An electrolyte, electrodes, and some form of external power source are the main components required for conducting electrolysis. A partition, such as an ion-exchange membrane or a salt bridge, may also be used, but this is optional. These are primarily used to prevent the products from diffusing near the opposing electrode.

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?

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