HW 3 S_corrected

# HW 3 S_corrected - CHE4473 Kinetics Spring 2015 Homework N3...

• Homework Help
• 6
• 83% (6) 5 out of 6 people found this document helpful

This preview shows pages 1–4. Sign up to view the full content.

CHE4473 Kinetics Spring 2015 Homework N°3: Rate constants, activation energy, kinetic theories Due Tuesday FEB 9 th 2016 1. For a gas reaction at 400 K the rate is reported as: (a) What are the units of the rate constant? (b) What is the value of the rate constant for this reaction if the rate equation is expressed as

This preview has intentionally blurred sections. Sign up to view the full version.

2. The pyrolysis of ethane proceeds with an activation energy of about 300 kJ/mol. How much faster is the decomposition at 650°C than at 500°C? Use R = 8.3144 J/mol K
3. Let’s analyze an oxidation reaction occurring in air at room temperature. Calculate (a) The most probable molecular speed of oxygen molecules at room temperature (b) The fraction of molecules that have high enough energy to undergo a reaction with a compound B if the activation energy for this reaction is 45 kJ/mole. (c) The reaction rate for this reaction if the partial pressure of O 2 is 0.21 atm and that of the compound B is 0.01 atm. The cross sectional collision area of O 2 and the compound B is 118,000 m 2 /mol Most probable molecular speed: u =

This preview has intentionally blurred sections. Sign up to view the full version.

This is the end of the preview. Sign up to access the rest of the document.
• Spring '14
• LanceL.Lobban
• Reaction, Chemical reaction, Reaction rate constant

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern