Portmess Homework Solutions 46

Portmess Homework Solutions 46 - 40 ALKANES Equations(1...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Equations (1) and (2) are the combustion of hydrogen and acetylene, respectively. Equation (3) is the reverse of the combustion of ethylene, and its value of H ° is the negative of the heat of combustion of ethylene. The value of H ° for the hydrogenation of acetylene to ethane is equal to the sum of the two reactions just calculated: ( c ) We use the equations for the combustion of ethane, ethylene, and acetylene as shown. The value of H ° for reaction (1) is twice that for the combustion of ethylene because 2 mol of ethylene are involved. 2.37 ( a ) The hydrogen content increases in going from CH 3 C > CH to CH 3 CH ? CH 2 . The organic compound CH 3 C > CH is reduced. ( b ) Oxidation occurs because a C G O bond has replaced a C G H bond in going from starting material to product. ( c ) There are two carbon oxygen bonds in the starting material and four carbon oxygen bonds in the products. Oxidation occurs. ( d ) Although the oxidation state of carbon is unchanged in the process overall, reduction of the organic compound has occurred. Its hydrogen content has increased and its oxygen content has decreased.
Image of page 1
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