The standard half-cell potential for the reaction O₂(g) + 4H+ (aq) + 4e¯ → 2H₂O(1) is +1.229 V at 298.15 K. ▼ Calculate E for a 2.00-molal solution of HCl for ao, 1.00 assuming that the ag is equal to the molality. Express your answer to four significant figures and include the appropriate units. E = 1.247 V Submit ✓ Correct Part B Previous Answers Calculate E for a 2.00-molal solution of HCl for ao, = 1.00 using the measured mean ionic activity coefficient for this concentration equal 1.009. Express your answer to four significant figures and include the appropriate units. E 1.247 V Submit Part C Previous Answers ✓ Correct How large is the relative error if the concentrations, rather than the activities, are used? Express your answers in percent to two significant figures.

Chemistry
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The standard half-cell potential for the reaction
O₂(g) + 4H+ (aq) + 4e¯ → 2H₂O(1)
is +1.229 V at 298.15 K.
Part A
Calculate E for a 2.00-molal solution of HCl for ao₂ = 1.00 assuming that the is equal to the molality.
Express your answer to four significant figures and include the appropriate units.
E = 1.247 V
Submit
Part B
Correct
E =
Calculate E for a 2.00-molal solution of HCl for ao₂ = 1.00 using the measured mean ionic activity coefficient for this concentration equal 1.009.
Express your answer to four significant figures and include the appropriate units.
Previous Answers
= 1.247 V
Submit
Part C
Previous Answers
Correct
How large is the relative error if the concentrations, rather than the activities, are used?
Express your answers in percent to two significant figures.
ΨΕ ΑΣΦ
relative error = 0.0
Submit Previous Answers Request Answer
X Incorrect; Try Again; One attempt remaining
?
%
Transcribed Image Text:The standard half-cell potential for the reaction O₂(g) + 4H+ (aq) + 4e¯ → 2H₂O(1) is +1.229 V at 298.15 K. Part A Calculate E for a 2.00-molal solution of HCl for ao₂ = 1.00 assuming that the is equal to the molality. Express your answer to four significant figures and include the appropriate units. E = 1.247 V Submit Part B Correct E = Calculate E for a 2.00-molal solution of HCl for ao₂ = 1.00 using the measured mean ionic activity coefficient for this concentration equal 1.009. Express your answer to four significant figures and include the appropriate units. Previous Answers = 1.247 V Submit Part C Previous Answers Correct How large is the relative error if the concentrations, rather than the activities, are used? Express your answers in percent to two significant figures. ΨΕ ΑΣΦ relative error = 0.0 Submit Previous Answers Request Answer X Incorrect; Try Again; One attempt remaining ? %
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