HomeworkLib
Question

Calculate the equilibrium constant for each of the reactions at 25∘C∘C. Standard Electrode Potentials at 25...

Calculate the equilibrium constant for each of the reactions at 25∘C∘C.

Standard Electrode Potentials at 25 ∘C
Reduction Half-Reaction
Cl2(g)+2e ---> 2CI- 1.36

I2(s)+2e --> 2I- 0.54

Part A

Cl2(g)+2I−(aq)→2Cl−(aq)+I2(s)

K= ?

science   chemistry   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

from data table:
Eo(I2(s)/2I-) = 0.54 V
Eo(Cl2(g)/2Cl-) = 1.36 V

As per given reaction,
cathode is (Cl2(g)/2Cl-)
anode is (I2(s)/2I-)

Eocell = Eocathode - Eoanode
= (1.36) - (0.54)
= 0.82 V


here, number of electrons being transferred, n = 2
Eo = (2.303*R*T)/(n*F) log Kc
At 25 oC or 298 K, R*T/F = 0.0592
So, Eo = (0.0592/n)*log Kc
0.82 = (0.0592/2)*log Kc
log Kc = 27.7027
Kc = 5.043*10^27
Answer: 5.04*10^27

0 0
Add a comment
Know the answer?
Add Answer to:
Calculate the equilibrium constant for each of the reactions at 25∘C∘C. Standard Electrode Potentials at 25...
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. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • Calculate the equilibrium constant for each of the reactions at 25∘C. Standard Electrode Potentials at 25...

    Calculate the equilibrium constant for each of the reactions at 25∘C. Standard Electrode Potentials at 25 ∘C Reduction Half-Reaction E∘(V) Fe3+(aq)+3e− →Fe(s) -0.036 Sn2+(aq)+2e− →Sn(s) -0.14 Cu2+(aq)+2e− →Cu(s) 0.16 O2(g)+2H2O(l)+4e− →4OH−(aq) 0.40 Cl2(g)+2e− →2Cl− 1.36 I2(s)+2e− →2I− 0.54 Part B O2(g)+2H2O(l)+2Cu(s)→4OH−(aq)+2Cu2+(aq) (Express your answer using two significant figures. ) Part C Cl2(g)+2I−(aq)→2Cl−(aq)+I2(s) (Express your answer using two significant figures.)

  • Calculate the equilibrium constant for each of the reactions at 25 ∘C. Standard Electrode Potentials at...

    Calculate the equilibrium constant for each of the reactions at 25 ∘C. Standard Electrode Potentials at 25 ∘C Reduction Half-Reaction E∘(V) Pb2+(aq)+2e− →Pb(s) -0.13 Zn2+(aq)+2e− →Zn(s) -0.76 Br2(l)+2e− →2Br−(aq) 1.09 Cl2(g)+2e− →2Cl−(aq) 1.36 MnO2(s)+4H+(aq)+2e− →Mn2+(aq)+2H2O(l) 1.21 Pb2+(aq)+2e− →Pb(s) -0.13 Br2(l)+2Cl−(aq)→2Br−(aq)+Cl2(g) Express your answer using two significant figures.

  • Calculate the equilibrium constant for each of the reactions at 25∘C. Standard Electrode Potentials at 25...

    Calculate the equilibrium constant for each of the reactions at 25∘C. Standard Electrode Potentials at 25 ∘C Reduction Half-Reaction E∘(V) Fe3+(aq)+3e− →Fe(s) -0.036 Sn2+(aq)+2e− →Sn(s) -0.14 Ni2+(aq)+2e− →Ni(s) -0.23 O2(g)+2H2O(l)+4e− →4OH−(aq) 0.40 Br2(l)+2e− →2Br− 1.09 I2(s)+2e− →2I− 0.54 A) 2Fe3+(aq)+3Sn(s)→2Fe(s)+3Sn2+(aq) (answers are not 4.1x10^5, 3.3x10^3, 2.7x10^10, or 2.6x10^10) B) O2(g)+2H2O(l)+2Ni(s)→4OH−(aq)+2Ni2+(aq) C) Br2(l)+2I−(aq)→2Br−(aq)+I2(s) (answer is not 1.7x10^18)

  • Standard Electrode Potentials at 25?C Reduction Half-Reaction E?(V) F2(g)+2e? ?2F?(aq) 2.87 Au3+(aq)+3e? ?Au(s) 1.50 Cl2(g)+2e? ?2Cl?(aq)...

    Standard Electrode Potentials at 25?C Reduction Half-Reaction E?(V) F2(g)+2e? ?2F?(aq) 2.87 Au3+(aq)+3e? ?Au(s) 1.50 Cl2(g)+2e? ?2Cl?(aq) 1.36 O2(g)+4H+(aq)+4e? ?2H2O(l) 1.23 Br2(l)+2e? ?2Br?(aq) 1.09 NO3?(aq)+4H+(aq)+3e? ?NO(g)+2H2O(l) 0.96 Ag+(aq)+e? ?Ag(s) 0.80 I2(s)+2e? ?2I?(aq) 0.54 Cu2+(aq)+2e? ?Cu(s) 0.16 2H+(aq)+2e? ?H2(g) 0 Cr3+(aq)+3e? ?Cr(s) -0.73 2H2O(l)+2e? ?H2(g)+2OH?(aq) -0.83 Mn2+(aq)+2e? ?Mn(s) -1.18 How can the table be used to predict whether or not a metal will dissolve in HCl? In HNO3? Drag the terms on the left to the appropriate blanks on the right to...

  • 4. (a) Use the standard reduction potentials at 25° C in Table 18.1 in Tro, Fridgen...

    4. (a) Use the standard reduction potentials at 25° C in Table 18.1 in Tro, Fridgen and Shaw, and calculate the standard emf E° of an electrochemical cell described by the following reaction: 3 Zn + 2 Cr3+ + 2 Cr + 3 Zn? (b) What is n? (c) What is AGº for this reaction at 25°? (d) What is the equilibrium constant for this reaction at 25°? TABLE 18.1 Standard Reduction Potentials at 25°C EV) 2.87 1.61 1.51 1.36...

  • Use the data in the table below to calculate the equilibrium constant at 25°C for the reaction: Cl2(g) + Sn(aq) + Sn2+...

    Use the data in the table below to calculate the equilibrium constant at 25°C for the reaction: Cl2(g) + Sn(aq) + Sn2+ (aq) + 2C1- (aq) Standard Reduction Potentials at 25°C Sn(aq) + 2e + Sn2+ (aq) E° = -0.14 V Cl2 (g) + 2e + 2C1- (aq) E° = 1.36 V Express your answer to two significant figures. O ALQ O a ?

  • 10. Calculate the Ksp of lead(II) iodide from the following standard electrode roper electrode potentials from...

    10. Calculate the Ksp of lead(II) iodide from the following standard electrode roper electrode potentials from the SRP table accompanying this HW. potentials, at 25°C. Your work must include using the Pbl,(8)+2e Pbs)+21-(aq) Pb(a)+2e Pb(s) A)8 x 10-9 B)9 x 10-5 C)2 x 10-17 D) 5 x 10-13 E)6 x 10-5 SRP Reduction Half Reaction Reduction Half Reaction 0.13 Polis) + 2 еー+ Pb(s) + 2 raq) Zn2(aq) + 2e Ms(ag) +2e- Mg(s) 1-037 -0.45 0.76 1.23Feag)+ 2e Fe(s) 0.80...

  • Cell Potential and Equilibrium Standard reduction potentials The equilibrium constant, K, for a redox reaction is...

    Cell Potential and Equilibrium Standard reduction potentials The equilibrium constant, K, for a redox reaction is related to the standard cell potential, Ecel, by the equation Reduction half-reaction (V) Ag+ (aq) + e-→Ag(s) Cu2+ (aq) + 2e-→Cu(s) 0.34 Sn (a) 4e-Sn(s 0.15 2H' (aq) + 2e-→H2 (g) Ni2+ (aq) + 2e-→Ni(s)-0.26 Fe2+ (aq) + 2e-→Fe(s)-0.45 Zn2+ (aq) + 2e-→Zn(s)-0.76 Al3+ (aq) +3e-→Al(s) -1.66 Mg2+ (aq) + 2e-→Mg(s) -2.37 0.80 n FEcell where n is the number of moles of electrons...

  • Be sure to answer all parts. Use standard reduction potentials to find the equilibrium constant for...

    Be sure to answer all parts. Use standard reduction potentials to find the equilibrium constant for the following reaction at 25 °C: Br2(aq) + 2I−(aq) ⇌ 2Br−(aq) + I2(s) Enter your answer in scientific notation to one significant digit. K = ___×___ 10

  • Standard potentials are measured against the standard hydrogen electrode (SHE). Because it is not...

    Standard potentials are measured against the standard hydrogen electrode (SHE). Because it is not always convenient to use a S.Н.Е., often other reference electrodes are used. The saturated calomel electrode (SCE.) is one commonly used reference electrode, with a reduction potential of +0.242 V versus the S.H.E. Using a table of standard reductions, determine what the standard reduction potential of each reduction half-reaction would be versus the S.C.E Cl2 (g) + 2e-→ 2 Cl-(aq) E1.36 Fe3 + (aq) + 3...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT