(a) Interpretation: The value of standard potential for the cell reaction needs to be determined in the PEM fuel cell. Concept introduction: In the cell, oxidation takes place at anode and reduction at cathode. The oxidation of aluminum and reduction of oxygen gas takes place. The overall cell reaction is sum of reaction at cathode and anode.
(a) Interpretation: The value of standard potential for the cell reaction needs to be determined in the PEM fuel cell. Concept introduction: In the cell, oxidation takes place at anode and reduction at cathode. The oxidation of aluminum and reduction of oxygen gas takes place. The overall cell reaction is sum of reaction at cathode and anode.
Solution Summary: The author explains that the value of standard potential for the cell reaction needs to be determined in the PEM fuel cell.
The value of standard potential for the cell reaction needs to be determined in the PEM fuel cell.
Concept introduction:
In the cell, oxidation takes place at anode and reduction at cathode. The oxidation of aluminum and reduction of oxygen gas takes place. The overall cell reaction is sum of reaction at cathode and anode.
Interpretation Introduction
(b)
Interpretation:
The cell voltage needs to be determined if partial pressure of hydrogen and oxygen gas is 6 atm and 0.20 atm respectively.
Concept introduction:
The Nernst equation of a cell is used to determine the electrode potential of the cell using the standard cell potential
The reaction queotient of the cell is ratio of concentration of products to reactants in the cell reaction.
The Nernst equation can be represented as follows:
E=Eo−2.303RTnFlogQ
Here, E is cell potential, Eo is standard cell potential, R is Universal gas constant, n is number of electrons involved in cell reaction, T is temperature, F is Faraday’s constant and Q us reaction quotient.
Please help me calculate the undiluted samples ppm concentration.
My calculations were 280.11 ppm. Please see if I did my math correctly using the following standard curve.
Link: https://mnscu-my.sharepoint.com/:x:/g/personal/vi2163ss_go_minnstate_edu/EVSJL_W0qrxMkUjK2J3xMUEBHDu0UM1vPKQ-bc9HTcYXDQ?e=hVuPC4
Provide an IUPAC name for each of the compounds shown.
(Specify (E)/(Z) stereochemistry, if relevant, for straight chain alkenes only. Pay attention to
commas, dashes, etc.)
H₁₂C
C(CH3)3
C=C
H3C
CH3
CH3CH2CH
CI
CH3
Submit Answer
Retry Entire Group
2 more group attempts remaining
Previous
Next
Arrange the following compounds / ions in increasing nucleophilicity (least to
most nucleophilic)
CH3NH2
CH3C=C:
CH3COO
1
2
3
5
Multiple Choice 1 point
1, 2, 3
2, 1, 3
3, 1, 2
2, 3, 1
The other answers are not correct
0000
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.
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell