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Answer the following questions related to the given electrochemical cell. 2NO(g) + H2O(l) + 2e− ⇌...

Answer the following questions related to the given electrochemical cell.

2NO(g) + H2O(l) + 2e− ⇌ N2O(g) + 2OH−(aq)
E° = 0.760 V

Bi2O3(aq) + 3H2O(l) + 6e− ⇌ 2Bi(s) + 6OH−(aq)
E° = -0.460 V

1. Answer the following questions under standard conditions.

(a) The half cell containing N2O/NO is the (anode /cathode )

(b) The half cell containing Bi2O3/Bi is the (anode/ cathode )

(c) What is E°cell (in V)? Report your answer to three decimal places in standard notation (i.e., 0.123 V).

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2. One cell compartment is comprised of a Pt electrode in a solution containing NO(g) at a pressure of 0.179 atm and N2O(g) at a pressure of 0.315 atm at a temperature of 356.5 K. The concentration of OH− is 3.68 × 10-4 M.

(a) Choose the appropriate complete Nernst equation below for this half cell.

Remember that molarity and pressure are relative to 1 M and 1 atm, and that solids and liquids have a ratio of 1.


E = E° + RT ln PNOa
nF PN2Oc




E = E° + RT ln PN2Oc[OH−]d
nF PNOa(1)b




E = E° + RT ln PNOa(1)b
nF PN2Oc[OH−]d




E = E° + RT ln PN2Oc
nF PNOa



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(b) What is Ecell (in V) for the N2O/NO half cell? Report your answer to three decimal places in standard notation (i.e., 0.123 V).

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3. The other cell compartment is comprised of a Pt electrode in a solution containing Bi2O3(aq) at a concentration of 1.76 × 10-1 M and Bi(s) at a temperature of 356.5 K. The concentration of OH− is 8.92 × 10-3 M.

(a) Choose the appropriate complete Nernst equation below for this half cell.

Remember that molarity and pressure are relative to 1 M and 1 atm, and that solids and liquids have a ratio of 1.



E = E° + RT ln [Bi2O3]a(1)b
nF (1)c[OH−]d




E = E° + RT ln (1)c
nF [Bi2O3]a




E = E° + RT ln [Bi2O3]a
nF (1)c




E = E° + RT ln (1)c[OH−]d
nF [Bi2O3]a(1)b



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(b) What is Ecell (in V) for the Bi2O3/Bi half cell? Report your answer to three decimal places in standard notation (i.e., 0.123 V).

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4. Under the conditions described in questions 2 and 3:

(a) The half cell containing N2O/NO is the (cathode /anode)

(b) The half cell containing Bi2O3/Bi is the (cathode/ anode )

(c) What is Ecell (in V)? Report your answer to three decimal places in standard notation (i.e., 0.123 V).

Tries 0/3

Solutions

Expert Solution

queen_honey_blossom answered 2 years ago
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