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.
Ethanol is soluble in water because the-OH group of ethanol (CH3CH2OH) can form hydrogen bonds with water.Hydrogen bonding occurs when a very electronegative molecule like O â¦ , N, F are bonded to molecules like hydrogen. For this example, I'll talk about groups that have-NH, -SH, -OH.herefore, they are too different from each other and are not miscible... Old (not so good) Answer Hexane is not soluble in water because Hexane is a Nonpolar solvent while water is Polar solvent. Like dissolves like.