using the standard reduction potential.
and concept ie E°cell must be positive for spontaneous. determine the following.
11. Use half-reaction potentials to predict whether the following reactions are spontaneous or non-spontaneous in aqueous...
14. For the following reactions, predict whether they will tend to be spontaneous at high, low, all temperatures, or non-spontaneous at any temperature (10 points) a) An "instant ice-pack" type of reaction where AS > 0, and AH > 0 b) 3A (1) ► B(s) + C(1) + D(g), AH < 0 c) 2A(s) → B(g) + C(1), AH > 0
Question 2 (1 point) Given the following half reactions with their corresponding standard reduction potentials, which of the following is/are true for the overall reaction happening under standard conditions? NO3 + 2H+ + 2e → NO2 + H20 E'O=0.421 V + O2 + 2H+ + 2e H20 E'=0.816 V (CHECK THE ONE(S) THAT IS/ARE CORRECT) 1) AE'' = 0.395 V for the spontaneous reaction. 2) % O2 + NO2 + NO3 is a spontaneous reaction. 3) O2 is the reducing...
The following two half-reactions are found in a table of standard reduction potentials: Half-Reaction E cytochrome c1(Fe3+) +e- → cytochrome c1 (Fe2+) 0.22 V lipoic acid + 2 H+ + 2 e- → dihydrolipoic acid -0.29 V + What is value of Eº for the reaction that will occur involving these two half-reactions that will be spontaneous under standard conditions? 0 0.73 V 0 0.07 V O 0.51 V -0.07 V
29. Use the Standard Reduction Potentials table to predict whether the redox reactions below would be spontaneous or nonspontaneous in the forward direction in 1.0 Maqueous solution 25°C. a) Snº+(ag) + Ni(s) → Ni2+(aq) + Sna+(aq) b) H2(g) + 2 OH- (aq) + Ca2+(ag) - Ca(s) + 2 H20 (1)
part A . Use a table of Standard Reduction Potentials to predict if a reaction will occur between Hg metal and Cl2(g), when the two are brought in contact via standard half-cells in a voltaic cell. If a reaction will occur, write a balanced net ionic equation for the reaction, assuming that the product ions are in aqueous solution. part B . Enter electrons as e-. Use smallest possible integer coefficients. If a box is not needed, leave it blank....
v For each of the following reactions, explain why they are spontaneous or non spontaneous based on the change in entropy of the reaction 2N20 (0) -> O2 (8) --> 2N2 (8) Decrease in the number of mole and phase change from gas to aqueous solutic A both decrease entropy N2 (g)+ 3H2(g) -> 2NH3 (8) B Decrease in the number of mole decreases entropy + CaCO3 (8) -> CaO (5) + CO2 (g) Increase in the number of mole...
Consider the following half-reactions and their reduction potentials (volt Au (aq) +3e- Au(s) +1.50 petad) +2 e' → Pt(s) +1.20 Co2+(aq) + 2 e' → Cols) -0.28 Mn? (aq)+2e Mn/s) -1.18 Which one of the following statements is correct? O A Ptis) can reduce Ht in aqueous solution OB. P (ag) can be reduced by Cols) OC. A (aa) is the weakest oxidizing agent D. Mn? (aq) can oxidize Au (s) OE. Auls) is the strongest reducing agent ous Save...
6. From the following data predict whether each of the reactions would be spontaneous at 25°C. If not, calculate at what temperature the reaction would be spontaneous. (a) Rxn A: AH = 10.5 kJ, AS = 30 J/K. (b) Rxn B: AH = -11.7 kJ, AS = -105 J/K.
Name: Chem 1120 Electrochemical Potentials Perform each of the following calculations, showing all work. Use the Electrochemical Potentials table provided on D2L if values are not provided. Standard State Electrochemical Cells 1. In each of the following systems two half-reactions are provided. For each system, a) write the balanced reaction occurring for a spontaneous system, and b) calculate the overall standard cell potential. a. Half Reaction Zn2+(aq) + 2e = Zn(s) Cr3+ (aq) + 38 = Cr(s) Eºred (V) -0.76...
dDetermine E∘E∘, ΔG∘ΔG∘, and KK for the overall reaction from
the balanced half-reactions and their standard reduction
potentials.4Fe3++2H2O −⇀↽− 4Fe2++O2+4H+
Assignment Score: Resources Give Up? Hint 1580/1900 Check Answer Attempt 3 K Question 15 of 19 not spontaneous spontaneous Determine E. AG°, and K for the overall reaction from the balanced half-reactions and their standard reduction potentials. 4 Fet2H2O 4Fe2 +02 +4H Fe e Fe2 E 0.771 V O22 H2e H,O EC 1.229 V E = V К- Is the...