Part A What is the effect on the emf of the cell shown in figure below, which has the overall reaction Zn(s) + 2H+ (aq) → Zn²+ (aq) + H₂(g). for each of the following changes? 0.76 V Voltmeter. Zn anode Anode half-cell - NO Zn²+ NO- Zn(s)→→→→→→ Zn²+ (aq) + 2 e Match the words in the left column increases NO₂ decreases does not change Nat- NO₂ H+ 40 -H₂(g) Cathode half-cell (standard hydrogen electrode, SHE) 2 H+ (aq) + 2e H₂(g) to the appropriate blanks in the sentences on the right. The pressure of the H₂ gas is increased in the cathode half-cell. As a result. Q consequently emf Zinc nitrate is added to the anode half-cell. As a result, Q Sodium hydroxide is added to the cathode half-cell, decreasing [H]. As a result, Q consequently emf The surface area of the anode doubled. During this change. Q , consequently emf Reset Help emf 1
Part A What is the effect on the emf of the cell shown in figure below, which has the overall reaction Zn(s) + 2H+ (aq) → Zn²+ (aq) + H₂(g). for each of the following changes? 0.76 V Voltmeter. Zn anode Anode half-cell - NO Zn²+ NO- Zn(s)→→→→→→ Zn²+ (aq) + 2 e Match the words in the left column increases NO₂ decreases does not change Nat- NO₂ H+ 40 -H₂(g) Cathode half-cell (standard hydrogen electrode, SHE) 2 H+ (aq) + 2e H₂(g) to the appropriate blanks in the sentences on the right. The pressure of the H₂ gas is increased in the cathode half-cell. As a result. Q consequently emf Zinc nitrate is added to the anode half-cell. As a result, Q Sodium hydroxide is added to the cathode half-cell, decreasing [H]. As a result, Q consequently emf The surface area of the anode doubled. During this change. Q , consequently emf Reset Help emf 1
Chapter18: Electrochemistry
Section: Chapter Questions
Problem 83E: Consider a concentration cell that has both electrodes made of some metal M. Solution A in one...
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![Problem 20.67
Part A
What is the effect on the emf of the cell shown in figure below, which has the overall reaction Zn(s) + 2H+ (aq) → Zn²+ (aq) + H₂(g). for each of the following changes?
0.76 V
Voltmeter
Zn
anode
Anode
half-cell-
NO
Zn²+
NO₂
increases
NO3
decreases
Nat
does not change
+
NO3+
Zn(s)→→→→→→ Zn²+ (aq) + 2 e¯ 2 H+ (aq) + 2e
H₂(g)
Match the words in the left column to the appropriate blanks in the sentences on the right.
H₂(g)
Cathode
half-cell
(standard
hydrogen
electrode, SHE)
The pressure of the H₂ gas is increased in the cathode half-cell. As a result, Q
consequently emf
Zinc nitrate is added to the anode half-cell. As a result, Q
.consequently emf
Sodium hydroxide is added to the cathode half-cell, decreasing [H+]. As a result, Q
consequently emf
The surface area of the anode is doubled. During this change, Q
Reset Help
emf
Review | Cons](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4f1d9a89-71fd-4cbf-9dfd-d06b2874d66e%2F7c2f2e8a-ebb9-4781-82e4-727fed6ec49a%2Fu1d647_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Problem 20.67
Part A
What is the effect on the emf of the cell shown in figure below, which has the overall reaction Zn(s) + 2H+ (aq) → Zn²+ (aq) + H₂(g). for each of the following changes?
0.76 V
Voltmeter
Zn
anode
Anode
half-cell-
NO
Zn²+
NO₂
increases
NO3
decreases
Nat
does not change
+
NO3+
Zn(s)→→→→→→ Zn²+ (aq) + 2 e¯ 2 H+ (aq) + 2e
H₂(g)
Match the words in the left column to the appropriate blanks in the sentences on the right.
H₂(g)
Cathode
half-cell
(standard
hydrogen
electrode, SHE)
The pressure of the H₂ gas is increased in the cathode half-cell. As a result, Q
consequently emf
Zinc nitrate is added to the anode half-cell. As a result, Q
.consequently emf
Sodium hydroxide is added to the cathode half-cell, decreasing [H+]. As a result, Q
consequently emf
The surface area of the anode is doubled. During this change, Q
Reset Help
emf
Review | Cons
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