The enthalpy of vaporization of ethanol is 38.7 kJ/mol at its boiling point (78C). Determine Ssys, Ssurr, and Suniv when 1.00 mol ethanol is vaporized at 78C and 1.00 atm.
4.8 physical properties Alkanes contain only nonpolar c-c and c-h bonds and as a result they exhibit only weak vader wals forces The mutual insolubility of nonpolar oil and very polar water leads to the common expression “oil and water don’t mix” Three-dimensional structure of molecules is called stereochemistry. Rotation occurs around carbon-carbon sigma bonds. Thus the two ch3 groups of ethane rotate alawing the hydrogens on one carbon to adopt different orientations relative to the hydrogens on the other carbon. These arrangements are called conformations. Conformations are different arrangements of atoms that are interconverted by rotation about single bonds In the eclipsed conformations, the C-H bonds on one carbon are directly aligned with bond angle on the adjacent carbon. R
