CHEM101 Chapter Notes -Hydrogen Bond, Dave Coverly, Molar Mass

• School: University of Alberta
• Department: Chemistry
• Course: CHEM101
• Professor: chemprof

Document Summary

Solutions will be posted over the fall break next week. You can pick it from my office w4-13b when i am there. You will also be able to pick your exam after the fall break. Which will have higher bp and mp, ethanol (c2h5oh) In ice each molecule is surrounded by 4 neighbors. Same molecular formula and molar mass (46 g/mol) H mp and bp for ethanol higher than for dimethy ether mp ( c) Rigid structure but large gaps or holes in the middle. When ice melts @ 0 c only a fraction of. As temperature falls below 4 c, denser water sinks. Liquid water molecules fill the holes to the bottom. Colder water rises and freezes on the surface. Then, the ice layer insulates the water underneath from heat loss (cooling and eventually freezing). Without hydrogen bonding, lakes would freeze from (normal behavior) bottom to top.