# Which substance exhibits the most hydrogen bonding?

by Bipolarity
Tags: bonding, exhibits, hydrogen, substance
 P: 783 1. The problem statement, all variables and given/known data Which of the following substances exhibits significant hydrogen bonding in the liquid state? A) $CH_{2}F_{2}$ B) $N_{2}H_{4}$ C) $CH_{3}OCH_{3}$ D) $C_{2}H_{4}$ E) $C_{2}H_{2}$ 2. Relevant equations 3. The attempt at a solution I know that hydrogen bonding generally only works with hydrogen being attracted to a nonbonding pair on a very electronegative atom (N,F,O and Cl). So only A,B, and C can be the answer. The answer turns out to be B, but I really thought it would be A since flourine is the most electronegative. I also don't understand whether being in the liquid state has any bearing on the problem. Advice? Thanks for your time! BiP
 Other Sci Sci Advisor P: 1,342 In a hydrogen bond, you must have a hydrogen bond donor and a hydrogen bond acceptor. The donor requires a hydrogen covalently bound to either a fluorine, nitrogen or oxygen. The hydrogen bond acceptor requires a lone pair on a fluorine, nitrogen or oxygen. Compound A is capable of acting as a hydrogen bond acceptor, but because the hydrogens are bound to the carbon, it is incapable of acting as a hydrogen bond donor.

 Related Discussions Chemistry 16 Biology, Chemistry & Other Homework 4 Biology, Chemistry & Other Homework 10 Chemistry 7 Introductory Physics Homework 4