Iron objects will readily corrode when exposed to air and moisture, as represented by the following equation: Select one: Ⓒ2H₂0 (1) + Fe(s) - Fe²+ (aq) + H₂(g) + 2OH(aq) O 02(g) + 2H₂O(1) + 2Fe²+ (aq) → 2Fe(s) + 40H(aq) ⒸO₂(g) + 2H₂O(l) + 2Fe(s) - 2Fe²(aq) + +40H (aq) 2H₂O(l) + 2Fe²+ (aq) - 2Fe(s) + O₂(g) + 4H(aq) Clear my choice Which of the following metals can be attached to an iron object to prevent corrosion of the iron and act as a sacrificial anode? Select one: O silver O cobalt O lead magnesium Clear my choice Use the following information to answer the next 3 questions. 1.0 mL KNO, 1.0 mol/L Zn(NO), 1.0 mol/L Co(NO), Fig. 10 As the voltaic cell in Figure 10 operates, the cations move towards the As the cell in Figure 10 operates, the electrons flow from the • electrode and that electrode electrode through the If the mass of the cathode changes by 5.00 g then the mass of the anode will by mass.
Iron objects will readily corrode when exposed to air and moisture, as represented by the following equation: Select one: Ⓒ2H₂0 (1) + Fe(s) - Fe²+ (aq) + H₂(g) + 2OH(aq) O 02(g) + 2H₂O(1) + 2Fe²+ (aq) → 2Fe(s) + 40H(aq) ⒸO₂(g) + 2H₂O(l) + 2Fe(s) - 2Fe²(aq) + +40H (aq) 2H₂O(l) + 2Fe²+ (aq) - 2Fe(s) + O₂(g) + 4H(aq) Clear my choice Which of the following metals can be attached to an iron object to prevent corrosion of the iron and act as a sacrificial anode? Select one: O silver O cobalt O lead magnesium Clear my choice Use the following information to answer the next 3 questions. 1.0 mL KNO, 1.0 mol/L Zn(NO), 1.0 mol/L Co(NO), Fig. 10 As the voltaic cell in Figure 10 operates, the cations move towards the As the cell in Figure 10 operates, the electrons flow from the • electrode and that electrode electrode through the If the mass of the cathode changes by 5.00 g then the mass of the anode will by mass.
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter17: Electrochemistry And Its Applications
Section: Chapter Questions
Problem 94QRT: An electrolytic cell is set up with Cd(s) in Cd(NO3)2(aq) and Zn(s) in Zn(NO3)2(aq). Initially both...
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The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
Question
Transcribed Image Text:Iron objects will readily corrode when exposed to air and moisture, as represented by the following equation:
Select one:
O 2H₂O(1) + Fe(s) → Fe²+ (aq) + H₂(g) + 2OH(aq)
O 02(g) + 2H₂O(l) + 2Fe²+ (aq) → 2Fe(s) + 40H(aq)
ⒸO₂(g) + 2H₂O(l) + 2Fe(s) - 2Fe²+ (aq) + 40H(aq)
O 2H₂O(1) + 2Fe²+ (aq) → 2Fe(s) + O₂(g) + 4H*(aq)
Clear my choice
Which of the following metals can be attached to an iron object to prevent corrosion of the iron and act as a sacrificial anode?
Select one:
O silver
O cobalt
O lead
magnesium
Clear my choice
Use the following information to answer the next 3 questions.
S
Zn
1.0 movL KNO,
1.0 mol/L Zn(NO), 1.0 mol/L CO(NO)
Fig. 10
As the voltaic cell in Figure 10 operates, the cations move towards the
electrode and that electrode
As the cell in Figure 10 operates, the electrons flow from the • electrode through the
If the mass of the cathode changes by 5.00 g then the mass of the anode will
by
mass.
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