Chem2070Fall2009hmwk5answers - Your Name: ANSWERS Lab TA...

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

View Full Document Right Arrow Icon
ANSWERS Your Name: Lab TA Name: Lab Section (Day, am/pm): Homework #5: Must be turned in by inserting in the proper box outside of Baker 131 before 2 pm on Tuesday, October 27. Show all work, on this and/or attached pages. Carefully show the progression of logical steps which take you to a Fnal answer. 1. (a) Draw Lewis dot structures, including appropriate resonance forms, and assign formal charges to each of those structures, for the molecule urea, with chemical formula NH 2 CONH 2 .Y ou should Fnd at least 3 such structures, some of which will have formal charges which are nonzero. Using VSEPR theory, predict the NCO bond angle. (b) SO 2 can be drawn as a molecule which satisFes the octet rule (using one double bond and a single bond) or as an expanded octet (using two double bonds). A measurement of the S-O bond distance demonstrates that the two bond lengths are identical. Does this clarify which Lewis structure is correct? Explain.
Background image of page 1

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

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 2

Chem2070Fall2009hmwk5answers - Your Name: ANSWERS Lab TA...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online