PChemLabTXT_page_339

PChemLabTXT | page 339 | https://thedailydialectics.com/pdfs/education/chemistry/p-chem/PChemLabTXT/PChemLabTXT.pdf

Rev. Confirming Pages ic 328 Chapter XII_ Macromolecules has a helical conformation when dissolved in ethylene dichloride at 25°C, but it is in the random-coil form when dissolved in dichloroacetic acid at the same temperature. This dif- ference is quite reasonable, since a hydrogen-bonding solvent…