1. Using data in Appendix E, calculate the standard emf for each of the following reactions:
(a) H2(g) + F2(g) → 2 H+(aq) + 2 F-(aq)
(b) Cu2+(aq) + Ca(s) → Cu(s) + Ca2+(aq)
(c) 3 Fe2+(aq) → Fe(s) + 2 Fe3+(aq)
(d) 2 ClO3-(aq) + 10 Br-(aq) + 12 H+(aq) → Cl2(g) + 5 Br2(l) + 6 H2O(l)
2. Using the standard reduction po
If lithium atoms are oxidized while tin ions are reduced...
how do you explain
-which one of these elements would be present at the cathode and at the anode?
-to complete such a voltaic cell, a salt bridge would be necessary between the anode and the cathode...what's the purpose of this salt bridge?
1. Consider a voltaic cell in which of the following reaction takes place:
2Cr (s) + 6H^+ (aq) → 2Cr^3+ (aq) + 3H↓2 (g)
2. An electrolytic cell produces aluminum from Al↓2O↓3 at the rate of 10kg a day. Assume a 100% yield.
a. How many moles of electrons must pass through the cell in one day?
1. Why do cars rust quickly in cold climates where the roads are deiced by the spreading of salt? Choose from:
The combination of low temperature and the presence of ions makes the redox reaction forforming rust more favorable.
The salt acts as the cathode to complete the "cell."
The salt promotes theformation of hydron
Complete and balance the following equations, and identify the oxidizing and reducing agents. (Recall that the O atoms in hydrogen peroxide, H2O2, have an atypical oxidation state.)
(a) NO2-(aq) + Cr2O72-(aq) → Cr3+ (aq) + NO3-(aq) (acidic solution)
(b) S(s) + HNO3(aq) → H2SO3(aq) + N2O(g) (acidic solution)
1. If the equilibrium constant for a two-electron redox reaction at 298 is 1.0×10−4, calculate the corresponding and under standard conditions.
2. A cell has a standard emf of 0.104 at 298 . What is the value of the equilibrium constant forthe cell reaction if ?
3. A voltaic cell utilizes the following reaction
Use the following pair of half-reactions to design a galvanic cell. Then write in the proper coefficient for each of the species involved in the overall reaction. Water molecules and protons are not shown in the half-reactions, but they may be needed to the overall reaction.
MnO4-(aq) -> Mn2+ (
(See attached file for full problem description)
A voltaic cell has been constructed with an aluminum metal electrode in Al3+(aq) in one half-cell and a lead metal electrode in Pb2+(aq) in the other half-cell.The two half-cells have a saturated KCl bridge between them and an external wire connecting the metal electrode
Calculating the equilibrium constant. I have had trouble with this problem.
The EXACT question asks: Calculate the equilibrium constant at 298K for the following equation.
Sn(+2)(aq) + MnO4(-1)(aq) ===> Sn(+4)(aq) + Mn(+2)
I understand Kc = (Products^(stoic. coefficients))/(Reactants^(stoic. coeffic