Answer to Question #144967 in Chemistry for Aldo

Question

1. Balance the following reaction with the oxidation number method:
Cr2O7 (2 -) + C2O4 (2-) → Cr 3+ (aq) + CO 2 (aq) (acidic atmosphere)

2. Balance the following reactions with the half-reaction method:
Cl2 + IO3 (-) → Cl (-) + IO 4 (-) (alkaline)

3. The standard potential values ​​are known as follows.
Mg │Mg (2+) ║ Ag (+) │Ag Eo = +3.17 volts
Pb │Pb (2+) ║ Ag (+) │Ag Eo = +0.94 volts
Determine the cell potential value for Mg │Mg (2+) ║ Pb (2+) │Pb

4. There are two electrodes as follows:
Sn 2+ (aq) + 2e (-) → Sn (s) Eo = -0.14 volts
Cu 2+ (aq) + 2e (-) → Cu (s) Eo = +0.34 volts
Then:
a. Specify cathode and anode
b. Determine the amode, cathode, and cell reactions
c. Describe the arrangement of the voltaic cells that occur
d. Write down cell notation
e. Calculate the cell potential
f. Analyze how the flow of electricity and electron flow occurs in the voltaic cell
g. Explain whether the reaction was spontaneous or not

Answer 1

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