1 Yellow media without gas pocket-sugar utilization with production of acid only. 2  Red media (no change in media) -no change and no sugar utilization. 3  Pink media especially at the top, ignore gas-no sugar utilization with degradation of protein resulting in alkaline end products (this may be difficult to see).
With organic solvents with long alkane chain, such as n-hexadecane and n-decane, the water droplets become much larger and the microemulsion is unstable. In this case, solvent polarity may have become a determining factor and the long alkane chain was too hydrophobic to form a stable microemulsion with water.
Not only is the staggered conformation morestable than the eclipsed, it is the most stable of all of the conformations; the eclipsed isthe least stable. Figure 3.4 shows how the potential energy of ethane changes for a 360Â°rotation about the carbonâcarbon bond.ection 3.1 The most stable conformation of ethane is the staggeredconformation.It is approximately 12 kJ/mol (3 kcal/mol) more stable than the eclipsed,which is the least stable conformation.