. The reaction Si(s) + 2 H2(g) ⇌ SiH4(g) is spontaneous at 298 K. The standard enthalpy of reaction ΔrH° = -61.9 kJ/mol and standard entropy of reaction ΔrS° = -76.7 J/K mol. At what temperature does the reaction cease to be spontaneous? 2. The standard cell potential for the Daniell cell, Zn(s) + Cu2+(aq) → Zn2+(aq) + Cu(s) is

Q: The standard reaction Gibbs energy for the electrochemical reaction Cr2O7^2- + 2 Fe + 14 H+ → 2 Cr3+…

A:

Q: 9. At 25° C: AG° is 21.3 kJ for the reaction HCO,H(aq) - H*(aq) + HCO2 (aq) Given that R= 8.314…

A:

Q: State what is expected to happen to the cell potential when the specified changes are made to the…

A: As there are many parts of the question, and have not asked about specific part, discuss first three…

Q: A galvanic cell whose cell reaction is 2Fe3+(aq) + Zn(s) → 2Fe2+(aq) + Zn2+(aq) has a cell potential…

A: Answer -

Q: (a) Balance the following simple redox reaction. Fe (s) + O2(g) + 2H2O (l) → Fe3+ + 4 OH- (3) (b) If…

A: Redox reaction : it is the reaction where oxidation and reduction are occurred simultaneously . the…

Q: Consider the following cell reaction: Fe(s) + 2 H*(? M)→FE²*(1.00 M)+ H2(g)(1.00 atm) - If the cell…

A: Given: A cell reaction: Fes + 2H+?M → Fe2+1.00M + H2g1.00atm Temperature = 298K Cell potential =…

Q: Calculate the standard free-energy change at 298K for the zinc-copper voltaic cell, which has a…

A:

Q: Devise cells in which the following are the reactions and calculate the standard cell potential in…

A: An Electrochemical is made of cathode and anode. In the cell process goes on are: oxidation and…

Q: For the reaction 2Co+ (aq) + 2Cl (aq)→2C02+ (aq) + Cl2 (g). what is the cell potential at.25°C if…

A: Given that, a cell reaction is  2Co3+(aq) + 2Cl-(aq) →2Co2+(aq) + Cl2(g). The concentrations are…

Q: How is equilibrium constant of a reaction related to standard cell potential?

A: How is equilibrium constant of a reaction related to standard cell potential?

Q: Consider the following reaction at 298K. Hg2+ (aq) + Co(s)→→→ Hg(t) + Co²+ (aq) The standard Gibbs…

A: Given-> ∆G° = -219.06 KJ = -219.06 × 1000 J = -219060 J

Q: Devise cells in which the following are the reactions and calculate the standard cell potential in…

A:

Q: Given the standard cell potential for this cell is 0.115 V, and the measured cell potential is…

A: The standard reduction potential is measured under the following conditions as the 298 K…

Q: 0.0592 V E cell -log(K) Calculate the equilibrium constant for the following reaction at 25°C:…

A: E°cell = (0.0592 V / n ) × log(K) 2Ag(s) + Fe2+(aq) <---> 2Ag+(aq) + Fe(s)  K = ?

Q: 4. Calculate the Gibbs Free-Energy and the standard Gibbs Free- Energy by the cell in the given cell…

A: Given : [Zn+2]  = 4.0 x 10-3 M  [H2] = 0.010 M  [H+] = 1.0 M  Also,  E°Zn+2/Zn = - 0.76 V  E°H+/H2 =…

Q: Consider the following equation, if the cell potential is 1.136 V at 25∘ C, determine the standard…

A:

Q: What is the definition of the standard cell potential ? What does a large positive standard cell…

A: The potential of an electrode to get reduced at standard conditions of temperature and…

Q: Calculate the standard cell potential at 25 ∘C for the reaction X(s)+2Y+(aq)→X2+(aq)+2Y(s) where…

A: Given standard cell potential : X(s)+2Y+(aq)→X2+(aq)+2Y(s) Also, ∆H° = -935 KJ/mol ∆S° = -373 J/K…

Q: A fuel cell is constructed in which both electrodes make use of the oxidation of methane. The…

A: (a)

Q: The equilibrium constant for the reaction Zn(s) + Fe2+(aq)⇌ Zn2+(aq) + Fe(s) is 6.66 x 1010 at 25…

A:

Q: Fe (s) + O2(g) + 2H2O (l) → Fe3+ + 4OH- Balance the  simple redox reaction, If the standard change…

A: Oxidation is the loss of electrons and reduction is the gain of electrons.

Q: For the cell represented as Al(s)∣Al3+ (aq)∥Sn2+ (aq), Sn4+ (aq)∣Pt(s), how many electrons are…

A: We would first write reduction half reaction and oxidation half reaction.  From this we can check…

Q: Explain the following relationships: Delta G and w, cell potential and w, cell potential and Delta…

A: The equations for the relationship between Delta G and w, cell potential and w, cell potential and…

Q: By what ratio will Q change if the cell potential is increased by 0.63 V? Assume v = 1 and the…

A: The electrode which has less negative reduction potential will act as a cathode and will undergo…

Q: One ecologically important equilibrium is that between carbonate and hydrogencarbonate (bicarbonate)…

A: The relation between free energy and cell potential is shown below: ∆G0 =-nFE0cell where; ∆G =…

Q: The standard cell potential of a Daniell cell, with cell reactionZn(s) + Cu2+(aq) → Zn2+(aq) +…

A: Given, a Daniell cell with the cell reaction as follows,Zn(s)+Cu2+→Zn2++Cu(s)the standard cell…

Q: Calculate the standard cell potential, standard free energy change, and equilibrium constant for the…

A:

Q: What does a negative standard cell potential imply about the reaction?

A: The potential difference between the cathode and anode half cell under the standard conditions of…

Q: For the reaction; 4H+   +  PbO2  + 2 Fe 2+ →  2 Fe 3+ + Pb2+  +  2 H2O, the standard electrode…

A:

Q: The free energy change for the following reaction at 25 °C, when [H+] = 1.14 M and [Cr3+] =…

A: We know from the relation that ∆G=-nFEcell where ∆G=Free energy change F=Faraday constant Ecell=Cell…

Q: A nonstandard cell is made by replacing the 1.0 M solutions of Cu(NO3)2 and Sn(NO3)2 in the standard…

A: Answer: 1. Let the standard electrode potential 1 M solution of Cu(NO3)2 and Sn(NO3)2 be E0 So,…

Q: For the below reaction, AGn at 298 K is -84.1 kJ. Calculate its equilibrium constant, K. 3. Fe2+…

A: The equilibrium constant for a given reaction is defined as the number which is used to express…

Q: Consider the following reaction at 298K. 2Fe3+(aq) + 2I-(aq)------>2Fe2+(aq) + I2(s) The standard…

A:

Q: Consider the following reaction at 298K. Pb2+ (aq) + 2 Cu+ (aq) → Pb (s) + 2 Cu²+ (aq) Which of the…

A: We have to predict the correct statement.

Q: A fuel cell is constructed in which both electrodes make use of the oxidation of methane. The…

A:

Q: 1. (a) Balance the following simple redox reaction. Fe (s) + O₂(g) + 2H₂O (1)→ Fe³+ + 4 OH (b) If…

A:

Q: Devise cells in which the following are the reactions and calculate the standard cell potential in…

A:

Q: The redox potentials for the Zn2+/Zn and Cl2/Cl– couples are -0.764 V and 1.395 V, respectively.…

A:

Q: Consider the following reaction and its Δ?∘Δ⁢G∘ at 25.00 °C. Fe2+(aq)+Zn(s)⟶Fe(s)+Zn2+(aq)Δ?∘=−60.73…

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: Calculate the standard Gibbs free energy of the reaction, ΔG∘rxn. The standard enthalpy of the…

A: We have given that ∆G° of C2H4(g) = 68.4 KJ/mol ∆G° of H2O(l) = -237.1KJ/mol ∆G° of C2H5OH(l) =…

Q: what is the relation between standard electrode potential and standard Gibb's free energy ?

A: Gibbs free energy (ΔG) gives information about the direction of the reaction. If ΔG is negative, the…

Q: 1. Calculate the standard reaction Gibbs free energy for the following cell reactions: (a) 2Ce"(aq)…

A: We know that, the Gibb's free energy changes (∆Go) can be expressed as follows --- ∆Go = -nFEcello (…

Q: Using the information in the data section, calculate the standard reaction ent and standard reaction…

A: Given reaction is :  N2 (g) + 3H2 (g) ---------> 2NH3 (g)  a). Calculate the standard change in…

Q: For the reaction: Zn(s) + 2Ag*(aq) → Zn*2(aq) 2Ag(s). a. Determine the standard cell potential. b.…

A:

Q: f the potential of a galvanic cell is +1.20 V, what is the Gibbs free-energy change when one mole of…

A: Given  potential of a galvanic cell is +1.20 V when one mole of electrons is transferred in the…

Q: Calcium carbonate undergoes thermal decomposition CaCO3(s) ⇌ CaO(s) + CO2(g) at high temperatures.…

A:

Q: By how much does the cell potential change when Q is increased by a factor of 5 for a reaction in…

A: Formula  Ecell = Ecello -0.05913logQ  E2-E1 = -0.05913 ( logQ2 -logQ1)              =  -0.05913 (…

Q: Consider the following reaction at 298K. Hg2+ (aq) + Ni(s)→→→→→ Hg(l) + Ni²+ (aq) The standard Gibbs…

A:

Q: Observe this cell at room temperature: Co(s) + Fe2+(aq.) (1.94M) ⟶ Co2+(aq.) (0.15M) + Fe (s) Is…

A: The spontaneity of any reaction can be calculated by determining the value of the electrochemical…