Question

Consider the reaction Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s) at 79 ∘C , where [Fe2+]= 3.30 M and [Mg2+]= 0.310 M...

Consider the reaction

Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s)

at 79 ∘C , where [Fe2+]= 3.30 M and [Mg2+]= 0.310 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?

Express your answer to three significant figures and include the appropriate units.

Part C

What is the value for n?

Express your answer as an integer and include the appropriate units (i.e. enter mol for moles).

Part D

Calculate the standard cell potential for

Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s)

Express your answer to three significant figures and include the appropriate units.

Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

PART A:

Mg(s) + Fe2+(aq) → Mg2+(aq) + Fe(s)

[Fe2+] = 3.30 M and [Mg2+] = 0.310 M .

The reaction quotient for the cell,

Q = [products] / [reactants]

Q = 0.310 / 3.30

Q = 9.4 x 10-2

PART B:

Temperature, T, kelvins = 79 + 273 = 352K

PART C:

Mg(s) + Fe2+(aq) → Mg2+(aq) + Fe(s)

n =2

Because Mg looses 2 electrons and Fe gains 2 electrons.

PART D:

Mg(s) Mg^2+ + 2 e- Eo = +2.37 volts

Fe2+(aq) + 2 e- Fe(s) Eo = - 0.44 volts

Eo cell = +2.37 volts - 0.44 volts

= 1.93 volts

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
Consider the reaction Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s) at 69 ∘C , where [Fe2+]= 3.20 M and [Mg2+]= 0.110 M...
Consider the reaction Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s) at 69 ∘C , where [Fe2+]= 3.20 M and [Mg2+]= 0.110 M . Part A:What is the value for the reaction quotient, Q, for the cell? Express your answer numerically. Part B:What is the value for the temperature, T, in kelvins? Express your answer to three significant figures and include the appropriate units. Part C:What is the value for n? Express your answer as an integer and include the appropriate units (i.e. enter mol for moles)....
What is the cell potential for the reaction Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s) at 75 ∘C when [Fe2+]= 3.10 M...
What is the cell potential for the reaction Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s) at 75 ∘C when [Fe2+]= 3.10 M and [Mg2+]= 0.110 M . Express your answer to three significant figures and include the appropriate units.
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+]=...
Consider the reaction Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s) at 61 ∘C , where [Fe2+]= 2.80 M and [Mg2+]= 0.210 M...
Consider the reaction Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s) at 61 ∘C , where [Fe2+]= 2.80 M and [Mg2+]= 0.210 M . A. What is the value for the reaction quotient, Q, for the cell? B. What is the value for the temperature, T, in kelvins? What is the value for n? C. Calculate the cell potential.
What is the cell potential for the reaction Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s) at 79 ∘C when [Fe2+]= 3.20 M...
What is the cell potential for the reaction Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s) at 79 ∘C when [Fe2+]= 3.20 M and [Mg2+]= 0.310 M .
What is the cell potential for the reaction Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s) at 47 ∘C when [Fe2+]= 3.10 M...
What is the cell potential for the reaction Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s) at 47 ∘C when [Fe2+]= 3.10 M and [Mg2+]= 0.110 MM . Express the potential numerically in volts.
Which of the following is a spontaneous reaction? Select one: a. Fe(s) + Mg2+(aq) → Fe2+...
Which of the following is a spontaneous reaction? Select one: a. Fe(s) + Mg2+(aq) → Fe2+ (aq) + Mg(s) b. Pb(s) + Fe2+(aq) → Pb2+ (aq) + Fe(s) c. 2Na (s) + Ca2+ (aq) → 2Na+(aq) + Ca (s) d. Li(s) + K+(aq) → Li+ (aq) + K(s)
Consider the Daniell cell, for which the overall cell reaction is Zn(s)+Cu2+(aq)⇌Zn2+(aq)+Cu(s) The concentrations of CuSO4...
Consider the Daniell cell, for which the overall cell reaction is Zn(s)+Cu2+(aq)⇌Zn2+(aq)+Cu(s) The concentrations of CuSO4 and ZnSO4 are 2.20×10−3 m and 1.10×10−3 m , respectively. Part A Calculate E setting the activities of the ionic species equal to their molalities. Express your answer to four significant figures and include the appropriate units. E = ? Part B Calculate γ±,ZnSO4 for the half-cell solutions using the Debye-Huckel limiting law. Express your answer using three significant figures. γ±,ZnSO4 = ? Part...
Combine the two half-reactions that give the spontaneous cell reaction with the smallest E∘. Fe2+(aq)+2e−→Fe(s) E∘=−0.45V...
Combine the two half-reactions that give the spontaneous cell reaction with the smallest E∘. Fe2+(aq)+2e−→Fe(s) E∘=−0.45V I2(s)+2e−→2I−(aq) E∘=0.54V Sn4+(aq)+2e−→Sn2+(aq) E∘=0.15V Write a balanced equation for the cell reaction. Express your answer as a chemical equation. Identify all of the phases in your answer.
Part A Calculate the equilibrium constant at 25 ∘C for the reaction Fe(s)+2Ag+(aq)→Fe2+(aq)+2Ag(s) Standard Reduction Potentials...
Part A Calculate the equilibrium constant at 25 ∘C for the reaction Fe(s)+2Ag+(aq)→Fe2+(aq)+2Ag(s) Standard Reduction Potentials at 25 ∘C Fe2+(aq)+2e−→Fe(s) E∘= −0.45 V Ag+(aq)+e−→Ag(s) E∘= 0.80 V
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT