Chemistry Homework Help

Get step-by-step solutions from expert tutors.

## How it works?

Type, take a picture, or paste your question with all necessary details to ensure high-quality responses.

### Get an answer in less than 24hrs

Once our tutors receive the question, they'll begin. You'll get an email once the solution is ready.

### Get Notified

We will send you email and text notification to let you know when your question is answered.

### Browse Homework Solutions

142 solutions

The Nernst Equation

#### Q. Consider an electrochemical cell with a zinc electrode immersed in 1.0M Zn^2+ and a nickel electrode immersed in 0.10 M Ni^2+. Zn^2+ + 2e^-→Zn E° = -0.76 V Ni^2+ + 2e^-→Ni E° = -0.23 V Calculate the concentration of Ni2+ if the cell is allowed to run to equilibrium at 25°C.

Solved • Dec 4, 2019

The Nernst Equation

#### Q. A voltaic cell consists of a Cu^2+/Cu electrode (𝝴°red = 0.34v) and an Au^3+/Au electrode(𝝴°red=1.50V). Calculate [Au^3+] if [Ci^2+] = 1.20 M and 𝝴cell = 1.13V. a. 0.2 M b. 0.002 M c. 5.0 M d. 0.04 M e. 0.001 M

Solved • Dec 4, 2019

The Nernst Equation

#### Q. A voltaic cell is constructed with two Zn2+-Zn electrodes, where the half-reaction is Zn2+ + 2e− → Zn (s) E° = -0.763 V The concentrations of zinc ion in the two compartments are 4.50 M and 1.70 ⋅ 10^−2 M, respectively. The cell emf is ________ V. 0.143 0.0717 -202 -0.75

Solved • Dec 4, 2019

The Nernst Equation

#### Q. What is the value for the temperature, T, in kelvins? Express your answer to three significant figures and include the appropriate units. Consider the reaction Mg (s) + Fe2+ Mg2+ + Fe(s) at 85C where [Fe2+] = 3.30 M and [Mg2+] = 0.310 M

Solved • Dec 4, 2019

The Nernst Equation

#### Q. What is the value for the reaction quotient, Q, for the cell? Consider the reaction Mg (s) + Fe2+ Mg2+ + Fe(s) at 85C where [Fe2+] = 3.30 M and [Mg2+] = 0.310 M

Solved • Dec 4, 2019

The Nernst Equation

#### Q. Can the Nernst equation be used at temperatures other than room temperature? yes no

Solved • Dec 4, 2019

The Nernst Equation

#### Q. In the Nernst equation, what is the numerical value of the reaction quotient, Q, under standard conditions? Express your answer using one significant figure.

Solved • Dec 4, 2019