J R = 8.314 mol·K F = 96, 485 mol AG = AG° + RT · In(Q) AE = AE° - (K) · In(Q) nF Half Reaction (Note: All given as reduction) E° (V) 02 (g) + 4 H"(aq) + 4 e ► 2 H2O (1) 1.229 Z2 (s) + 2 e" 3+ 2z" (aq) 0.426 A' (ag) + 3 е A (s) 0.292 2 H20 (1) + 2 e¯ – H2 (g) + 2 OH¯ (aq) G2+ (aq) + 2 e - 0.828 G (s) - 1.245 M2+ (aq) + 2 e M (s) - 1.893 Using a U-tube, a student sets up a non-spontaneous electrochemical cell with a battery connected to two carbon electrodes that are submerged in 1 M MZ2 (aq) solution (M is a metal and Z is an anion composed of the newly discovered element Z). Use the reference information given in the table above to answer the following three questions. Question 11 The electrode connected to the red wire (negative terminal on the battery) will. o produce bubbles and the pH will increase. o produce M (s) on the electrode and the pH will not change. o produce bubbles and the pH will decrease. o produce M (s) on the electrode and the pH will decrease. Question 12 The electrode connected to the black wire (positive terminal on the battery) will. o produce Z2 (s) on the electrode and the pH will not change. o produce bubbles on the electrode and the pH will decrease. o produce Z2 (s) on the electrode and the pH will increase. o produce bubbles on the electrode and the pH will increase.
J R = 8.314 mol·K F = 96, 485 mol AG = AG° + RT · In(Q) AE = AE° - (K) · In(Q) nF Half Reaction (Note: All given as reduction) E° (V) 02 (g) + 4 H"(aq) + 4 e ► 2 H2O (1) 1.229 Z2 (s) + 2 e" 3+ 2z" (aq) 0.426 A' (ag) + 3 е A (s) 0.292 2 H20 (1) + 2 e¯ – H2 (g) + 2 OH¯ (aq) G2+ (aq) + 2 e - 0.828 G (s) - 1.245 M2+ (aq) + 2 e M (s) - 1.893 Using a U-tube, a student sets up a non-spontaneous electrochemical cell with a battery connected to two carbon electrodes that are submerged in 1 M MZ2 (aq) solution (M is a metal and Z is an anion composed of the newly discovered element Z). Use the reference information given in the table above to answer the following three questions. Question 11 The electrode connected to the red wire (negative terminal on the battery) will. o produce bubbles and the pH will increase. o produce M (s) on the electrode and the pH will not change. o produce bubbles and the pH will decrease. o produce M (s) on the electrode and the pH will decrease. Question 12 The electrode connected to the black wire (positive terminal on the battery) will. o produce Z2 (s) on the electrode and the pH will not change. o produce bubbles on the electrode and the pH will decrease. o produce Z2 (s) on the electrode and the pH will increase. o produce bubbles on the electrode and the pH will increase.
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
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Transcribed Image Text:J
R = 8.314 mol·K
F = 96,485 mol
AG = AG° + RT · In(Q)
ΔΕ ΔΕ-). In(Q)
Half Reaction (Note: All given as reduction)
E° (V)
02 (g) + 4 H"(aq) + 4 e
2 H20 (1)
1.229
|Z2 (s) + 2 e
→ 2Z° (aq)
0.426
3+
(aq) + 3 е
A'
→ A (s)
0.292
2 H20 (I) + 2 e
H2 (g) + 2 OH¯ (aq)
- 0.828
G2+
(aq) + 2 e
G (s)
- 1.245
(aq) + 2 e¯
→ M (s)
- 1.893
Using a U-tube, a student sets up a non-spontaneous electrochemical cell with a
battery connected to two carbon electrodes that are submerged in 1 MMZ2 (aq)
solution (M is a metal and Z is an anion composed of the newly discovered
element Z). Use the reference information given in the table above to answer
the following three questions.
Question 11
The electrode connected to the red wire (negative terminal on the battery) will...
o produce bubbles and the pH will increase.
o produce M (s) on the electrode and the pH will not change.
o produce bubbles and the pH will decrease.
o produce M (s) on the electrode and the pH will decrease.
Question 12
The electrode connected to the black wire (positive terminal on the battery) will.
o produce Z2 (s) on the electrode and the pH will not change.
o produce bubbles on the electrode and the pH will decrease.
o produce Z2 (s) on the electrode and the pH will increase.
o produce bubbles on the electrode and the pH will increase.
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