Question

Calculate the f.e.m. for the following reaction at 25oC Au3+(aq) (4.4e-3M) +   2Cl-(aq) (1.3e-2M)      →   Au(s)...

Calculate the f.e.m. for the following reaction at 25oC

Au3+(aq) (4.4e-3M) +   2Cl-(aq) (1.3e-2M)      →   Au(s) ( - M) +   Cl2(g) ( - M)

Ecell = ? (2 decimals accuracy!)

Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

balanced equation

2Au3+(aq) (4.4e-3M) + 6Cl-(aq) (1.3e-2M) ---> 2Au(s) ( - M)   +   3Cl2(g) ( - M)


E0Au3+/Au = 1.52 v

E0Cl2/2cl- = 1.36 v


E0cell = E0cathode - E0anode

       = (1.52-1.36)

       = 0.16 V

Ecell = E0cell - 0.0591/nlog(1/[Au3+]^2[Cl-]^6)

       = 0.16 - (0.0591/6)log(1/((4.4*10^(-3))^2(1.3*10^(-2))^6))

       = 0.00211 V

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Au3+(aq) + 3e- --> Au(s) 1.498 V Ag+(aq) + e- --> Ag(s) 0.767 V Cu2+(aq) +...
Au3+(aq) + 3e- --> Au(s) 1.498 V Ag+(aq) + e- --> Ag(s) 0.767 V Cu2+(aq) + 2e- --> Cu(s) 0.342 V Ni2+(aq) + 2e- -->Ni(s) -0.257 V Calculate the potential at 25ºC for the following cell: Cu | Cu2+ [0.024M] || Ag+ [0.0048M] | Ag
Using the reaction and the E∘ given below 2Co3+(aq)+2Cl−(aq)→2Co2+(aq)+Cl2(g)      E∘=0.46 V what is the cell potential at...
Using the reaction and the E∘ given below 2Co3+(aq)+2Cl−(aq)→2Co2+(aq)+Cl2(g)      E∘=0.46 V what is the cell potential at 25 ∘C if the concentrations are [Co3+]= 3.10×10−2M , [Co2+]= 0.732 M , and [Cl−]= 0.544 M and the pressure of Cl2 is PCl2= 9.80 atm ? 2)At 57.0 ∘C , what is the maximum value of Q needed to produce a non-negative E value for the reaction SO4^2−(aq)+4H+(aq)+2Br−(aq)⇌Br2(aq)+SO2(g)+2H2O(l) In other words, what is Q when E=0 at this temperature?
1) For the reaction 2Co3+(aq)+2Cl−(aq)→2Co2+(aq)+Cl2(g). E∘=0.483 V what is the cell potential at 25 ∘C if...
1) For the reaction 2Co3+(aq)+2Cl−(aq)→2Co2+(aq)+Cl2(g). E∘=0.483 V what is the cell potential at 25 ∘C if the concentrations are[Co3+]= 0.685 M , [Co2+]= 0.417 M , and [Cl−]= 7.70×10−2M and the pressure of Cl2 is PCl2= 6.60 atm ? 2)Part A At 63.0 ∘C , what is the maximum value of the reaction quotient, Q , needed to produce a non-negative E value for the reaction SO42−(aq)+4H+(aq)+2Br−(aq)⇌Br2(aq)+SO2(g)+2H2O(l) In other words, what is Q when E=0 at this temperature?Express your answer...
Select the classification for the following reaction. 2I–(aq) + Cl2(aq) → I2(aq) + 2Cl –(aq)
Select the classification for the following reaction. 2I–(aq) + Cl2(aq) → I2(aq) + 2Cl –(aq)
Given the following half reaction: Au^3+(aq) + 3e- ---> Au(s) Calculate the grams of Au produced...
Given the following half reaction: Au^3+(aq) + 3e- ---> Au(s) Calculate the grams of Au produced electrolyticaly using a current of 4.75 amps for 1 hour and 20 minutes.
1.Calculate the emf for a cell operating with the reaction below at 25oC in which [Cr+3]...
1.Calculate the emf for a cell operating with the reaction below at 25oC in which [Cr+3] = 1.0 X 10-3M and [Ni+2] = 1.5M. 3Ni+2 (aq) + 2Cr (s) g>>>3Ni (s) + 2Cr+3 (aq)
How many Coulombs of charge are needed to create 19.7 g of Au(s) from Au3+(aq)? 1....
How many Coulombs of charge are needed to create 19.7 g of Au(s) from Au3+(aq)? 1. 289, 456 C 2. 28, 945 C 3. 0.1 C 4. 0.3 C 5. 96, 485 C 6. 9, 649 C
Part A For the reaction 2Co3+(aq)+2Cl−(aq)→2Co2+(aq)+Cl2(g). E∘=0.483 V what is the cell potential at 25 ∘C...
Part A For the reaction 2Co3+(aq)+2Cl−(aq)→2Co2+(aq)+Cl2(g). E∘=0.483 V what is the cell potential at 25 ∘C if the concentrations are [Co3+]= 0.469 M , [Co2+]= 0.448 M , and [Cl−]= 0.850 M and the pressure of Cl2 is PCl2= 5.80 atm ? Express your answer with the appropriate units.
9 part 2 A voltaic cell employs the following redox reaction: Sn2+(aq)+Mn(s)→Sn(s)+Mn2+(aq) Calculate the cell potential...
9 part 2 A voltaic cell employs the following redox reaction: Sn2+(aq)+Mn(s)→Sn(s)+Mn2+(aq) Calculate the cell potential at 25 ∘C under each of the following conditions Part A standard conditions Ecell Part B [Sn2+]= 1.45×10−2 M ; [Mn2+]= 1.41 M . Express your answer using two significant figures. Ecell Part C [Sn2+]= 1.41 M ; [Mn2+]= 1.45×10−2 M . Ecell
Consider the reaction Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s) at 69 ∘C , where [Fe2+]= 3.00 M and [Mg2+]= 0.210 M...
Consider the reaction Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s) at 69 ∘C , where [Fe2+]= 3.00 M and [Mg2+]= 0.210 M . Part A What is the value for the reaction quotient, Q, for the cell? Part B What is the value for the temperature, T, in kelvins? Part C What is the value for n? Part D Calculate the standard cell potential for Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s) Part E For the reaction 2Co3+(aq)+2Cl−(aq)→2Co2+(aq)+Cl2(g).  E∘=0.483 V what is the cell potential at 25 ∘C if the concentrations are [Co3+]=...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT