The structure of C12E5 is given below. what type of surfactant is it?
Will CMC of C12E5 be smaller or larger than SDS?
Rank the following solutions in order of increasing capability to dissolve oil. options are 9*10^-5M C12E5 , 6*10^-5M C12E5 , 3*10^-5M C12E5 , pure water.
plz answer it.
1. Nonionic
2. Much smaller (7e-5 vs 8.2e-3)
3. Pure water < 3e-5 < 6e-5 < 9e-5
Thanx...
To determine the type of surfactant C12E5 is, you need to analyze its structure. Unfortunately, you mentioned that the structure is given below, but I don't have visual capabilities. However, I can provide some information about C12E5 that might help you identify its type.
C12E5 is a nonionic surfactant belonging to the class of alkyl ethoxylates. These surfactants have a hydrophilic (water-loving) ethylene oxide (EO) chain and a hydrophobic (water-hating) alkyl chain. The number before "E" represents the number of EO units, and "C12" indicates that the length of the alkyl chain is 12 carbon atoms.
Now, let's compare the critical micelle concentration (CMC) between C12E5 and SDS. CMC is the concentration at which surfactant molecules start to form micelles (aggregates) in a solution. Surfactants with a lower CMC tend to have better surfactant properties.
SDS (sodium dodecyl sulfate) is an anionic surfactant, meaning it has a negatively charged hydrophilic head. Comparing C12E5 (nonionic) to SDS (anionic), one would generally expect SDS to have a lower CMC than C12E5. This is because electrostatic repulsions between the charged head groups in SDS allow for effective micelle formation at lower concentrations.
To rank the solutions in order of increasing capability to dissolve oil, let's consider the concentration of C12E5 and pure water. Generally, the higher the concentration of a surfactant, the better its ability to dissolve oil.
Given the options: 9*10^-5M C12E5, 6*10^-5M C12E5, 3*10^-5M C12E5, and pure water, we can rank them in increasing order of their ability to dissolve oil:
1. Pure water: Since water is polar and oil is nonpolar, pure water has the least capability to dissolve oil.
2. 3*10^-5M C12E5: Higher concentration than pure water, so it has more capability to dissolve oil than pure water.
3. 6*10^-5M C12E5: Higher concentration than 3*10^-5M C12E5, so it has more capability to dissolve oil than 3*10^-5M C12E5.
4. 9*10^-5M C12E5: Highest concentration among the options, so it has the highest capability to dissolve oil.
So, the ranking in increasing order of their capability to dissolve oil is: Pure water, 3*10^-5M C12E5, 6*10^-5M C12E5, 9*10^-5M C12E5.