{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Ch6(4-5)Oct13Fa08a - CHEMISTRY 109 FALL 2008 ANNOUNCEMENTS...

Info icon This preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
CHEMISTRY 109 FALL 2008 ANNOUNCEMENTS Exam II Thursday 5:45 pm Check seating assignments !!
Image of page 1

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

View Full Document Right Arrow Icon
The heat of combustion of benzoic acid (HC 7 H 5 O 2 ) is –26.38 kJ/g. A 1.640 g sample of benzoic acid is combusted in a bomb calorimeter. The temperature of the calorimeter increases from 22.25º C to 27.20 ºC. What is the total heat capacity of the calorimeter?
Image of page 2
When 6.750 g of sugar is burned in a bomb calorimeter, the temperature rises from 24.92°C to 39.97°C. If C cal = 4.90 kJ/°C, find Δ E rxn for the combustion of sucrose in kJ/mole (this could also be referred to as ΔE molar ) . Sucrose = C 12 H 22 O 11
Image of page 3

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

View Full Document Right Arrow Icon
Energy Changes ΔE has different meanings when comparing constant-volume calorimetry and constant-pressure calorimetry. Constant-pressure calorimetry: ________________ Constant-volume calorimetry: _________________ In a constant-volume calorimeter, the reaction is contained within the container so there is no displacement and w = 0. (bomb calorimeter) In a constant pressure calorimeter, the volume may change
Image of page 4
Energy Changes The great majority of chemical reactions occur at _______________ ,
Image of page 5

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

View Full Document Right Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    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.

    Student Picture

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

  • Left Quote Icon

    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.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    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.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern