Given the two following reduction half reactions: Al3+(aq) + 3e- → Al(s) Eo = −1.650 V Cd2+(aq) + 2e- → Cd(s) Eo = −0.400 V Calculate ΔGº (in kJ) for a Al/Cd voltaic cell. Hint: Remembmol)er that a voltaic cell runs on a spontaneous redox reaction. Hint: Make sure to determine the total moles of electrons transferred for the cell.
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For the following equilibrium CH4(g) + 2 H2S(g) ⇌ CS2…
For the following equilibrium CH4(g) + 2 H2S(g) ⇌ CS2(g) + 4 H2(g) the equilibrium constant, K = 4.28 at 280.0 °C. Which of the following best describes the reaction at equilibrium?
An experimental plot of ln(k) vs. 1/T is obtained in lab for…
An experimental plot of ln(k) vs. 1/T is obtained in lab for a reaction. The slope of the best-fit line for the graph is -2938 K. What is the value of the activation energy for the reaction in kJ/mol? Hint: The linear form of the Arrhenius equation relates the rate constant to the temperature.
Which of the following will NOT affect the rate of a reactio…
Which of the following will NOT affect the rate of a reaction? temperature of reaction magnitude of enthalpy of reaction (ΔH) concentration of reactants sign of enthalpy of reaction (ΔH) physical state of reactants
An experimental plot of ln(k) vs. 1/T is obtained in lab for…
An experimental plot of ln(k) vs. 1/T is obtained in lab for a reaction. The slope of the best-fit line for the graph is -3715 K. What is the value of the activation energy for the reaction in kJ/mol? Hint: The linear form of the Arrhenius equation relates the rate constant to the temperature.
Phophorous-32 decays by beta emission to form sulfur-32. …
Phophorous-32 decays by beta emission to form sulfur-32. (In case the picture does not show: The picture indicated that 24 P-32 decayed to 3 P-32 in 18 min. ) What is the decay constant, k, for P-32?
Consider the voltaic cell diagram: Sn(s) | Sn2⁺(aq) || Ag⁺…
Consider the voltaic cell diagram: Sn(s) | Sn2⁺(aq) || Ag⁺ (aq) | Ag (s) What is the standard cell potential, E°cell, (in V) for this voltaic cell? Hint: Refer to the table of standard reduction potentials provided. Half Reaction E° red (V) Ag+ (aq) + e– → Ag (s) +0.80 Fe3+ (aq) + e– → Fe2+ (aq) +0.77 Cu2+ (aq) + 2 e– → Cu (s) +0.34 Sn4+ (aq) + 2 e– → Sn2+ (aq) +0.15 2H+ (aq) + 2 e– → H2 (g) 0.00 Pb2+ (aq) + 2 e – → Pb (s) –0.13 Sn2+ (aq) + 2 e– → Sn (s) –0.14 Ni2+ (aq) + 2 e – → Ni (s) –0.28 Cd2+ (aq) + 2 e – → Cd (s) –0.40 Fe2+ (aq) + 2 e – → Fe (s) –0.44 Cr3+ (aq) + 3 e– → Cr (s) –0.74 Zn2+ (aq) + 2 e – → Zn (s) –0.76 Al3+ (aq) + 3 e– → Al (s) –1.66
The combustion of ammonia proceeds by the reaction …
The combustion of ammonia proceeds by the reaction 4 NH3 + 7 O2 → 4 NO2 + 6 H2O When the rate of appearance of H2O is 1.10 Ms-1, the rate of disappearance of O2 is Ms-1
A sample of sodium bicarbonate, NaHCO3, is placed in a clos…
A sample of sodium bicarbonate, NaHCO3, is placed in a closed 1.0 L vessel at 398 K and allowed to decompose unil it reaches equilibrium according to the following equation: 2 NaHCO3 (s) ⇌ Na2CO3(s) + H2O (g) + CO (g) Kp = 0.450 What is the partial pressure of CO (in atm) at equilibrium?
Phophorous-32 decays by beta emission to form sulfur-32. …
Phophorous-32 decays by beta emission to form sulfur-32. (In case the picture does not show: The picture indicated that 24 P-32 decayed to 3 P-32 in 9min. ) What is the decay constant, k, for P-32?