What is the freezing point of a solution of ethyl alcohol that contains 20.0 g of the solute c2h5oh dissolved in 590.0 g of water?
Problem #14: What is the freezing point of a solution of ethyl alcohol, that contains 20.0 g of the solute (C2H5OH), dissolved in 590.0 g of water? The solution freezes at −1.37 °C.
How many carbons are in dodecanol?
Showing Compound 1-dodecanol (FDB030246)
| Record Information | |
|---|---|
| Monoisotopic Molecular Weight | 186.198365454 |
| Classification | |
| Description | Belongs to the class of organic compounds known as fatty alcohols. These are aliphatic alcohols consisting of a chain of a least six carbon atoms. |
| Kingdom | Organic compounds |
What is the boiling point of 1 dodecanol?
498.2°F (259°C)Dodecanol / Boiling point
Is dodecanol polar?
Answer and Explanation: The structure of dodecanol is shown below: Even though the compound has a polar hydroxyl group (-OH), it is still considered as a nonpolar compo…
What is dodecanol used in?
1-Dodecanol is used primarily as a chemical intermediate for the production of n-Dodecyl sulfate salts, and in the manufacture of n-Dodecyl ethoxylates. It also finds use in synthetic detergents, lube additives, pharmaceu- ticals, cosmetics, rubber, textiles, perfumes, and as a flavouring agent.
Is dodecanol soluble in hexane?
Due to its enormously high surface activity it competes with SDS at the interface. We demonstrate here that this “natural” impurity C12OH does not remarkably affect the adsorption dynamics of SDS at the water/hexane interface, due to its high solubility in hexane.
What is KF constant?
Kf is a constant for a given solvent. Kf is called the molal freezing point depression constant and represents how many degrees the freezing point of the solvent will change when 1.00 mole of a nonvolatile nonionizing (nondissociating) solute dissolves in one kilogram of solvent.
What is the molal freezing point constant K?
The proportionality constant, Kf, is called the molal freezing-point depression constant. It is a constant that is equal to the change in the freezing point for a 1-molal solution of a nonvolatile molecular solute. For water, the value of Kf is −1.86oC/m.
What is the freezing point of cyclohexane?
Exercise: The freezing point of cyclohexane is 6.50 °C.
What is the freezing point depression constant of cyclohexane?
20.2 °C-kg per mol
The freezing point depression constant of cyclohexane is 20.2 °C-kg per mol of solute. The density and volume of cyclohexane are used to calculate the mass of the solvent. The values of the freezing point of the pure solvent and the freezing point of the solution are determined from the plots.
What are Alkoxylates used for?
Fatty Amine Alkoxylates Applications: Our main applications are: as wetting and levelling agents in textile processing, as adjuvants for agrochemical formulations, as corrosion inhibitors for example in the oil & gas sector.
What are alcohol Alkoxylates?
Alcohol alkoxylate is a surfactant used in household cleaning products as a rinse aid to prevent spotting. It is also a wetting agent that controls foam.
What are the physical and chemical properties of cyclohexane?
Cyclohexane Solvent Properties CAS 110-82-7 Physical Properties Molecular weight 84.16 Boiling point 80.72°C Vapor pressure 77.5 Torr at 20°C Freezing point 6.54°C Refractive index 1.4262 at 20°C Density 0.7785 g/mL (6.497 lb/gal) at 20°C 0.7739 g/mL (6.457 lb/gal) at 25°C
What is the freezing point of cyclohexane in OC?
Here T is the change in freezing point (TF – Ti) on oC. KF is called the freezing point depression constant. KF = 20.0 oC/m for cyclohexane. m is the molality of the solution. m= moles of solute kilograms of solvent
What happens when cyclohexane dissolves in solvents?
You will repeat this process after dissolving your unknown in the cyclohexane. Whenever a solute is dissolved in a solvent, it lowers the freezing point of the solvent. Here cyclohexane is the solvent and your unknown is the solute.
What is the concentration of cyclohexane in crude oil?
Cyclohexane occurs in US crude oil at a concentration of approximately 7,000 mg/L (2). Cyclohexane is present in all crude oils in concentrations of 0.1-1.0% (3,4). (1) Graedel TE; Chem Cmpd in The Atmos; NY,NY: Academic Press p. 99 (1978) (2) American Petroleum Institute; Transport and Fate of Non-BTEX Petrolem Chemical in Soils and Groundwater.