{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

problem_set2Key

problem_set2Key - Problem Set 2 Key 1 O pulls electrons of...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Problem Set 2 Key February 17, 2006 1. O pulls electrons of the covalent bond closer to it than to H. Thus O in water has a partial negative charge and H a partial positive charge. When ionic or charged materials dissolve in water, the charges on the water successfully replace the charge attractions between the molecules of the material. Thus there is little if any loss of bonding and little if any increase in enthalpy. As a result, the increase in entropy due to mixing of water and the material dissolving in it drives the reaction, giving the negative energy change. 2. Vitamin E non polar and thus is fat soluble, and doesn’t dissolve in water. Thus it cannot be readily excreted, and instead dissolves in the non polar cores of membranes and accumulates. Vitamin C is water soluble and readily excreted in the urine 3. a --COO - and H + . b. As part of the acid, the proton is covalently bound to O, sharing its electron with the O, and sharing one of the O’s electrons. When apart, it leaves its electron behind with the amino acid, and has only a proton and no electrons.
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
Image of page 2
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