What is the molecular formula of acetone? What is solubility in physical chemistry? What is a pure substance in chemistry? The greatest solvent in the world is What is a compound in chemistry? What is dissolution in chemistry? What property of water allows water to work as a universal solven...
Why is it easy to separate water from ethanol in a water-ethanol mixture? What substance is responsible for the cohesive property of water? Why is it impossible to completely separate ethanol from water? Which of the following solvents give the fastest reaction: ethanol, an ethanol/acet...
The Effect Concentrations were generally some orders of magnitude lower than for acetone, acetonitrile, methanol and methyl-tert-buthylether, pointing out and quantifying the clear influence of the alkyl chain length on toxicity. The effects of pentachlorophenol [28] have been studied using a ...
By cross-linking collagen acid (type A) gelatin with glutaraldehyde using the acetone technique, GLN-NP was obtained, and its particle size and stability were then examined. Family medical history To formulate biomimetic joint lubricants, 5, 15, and 30 mg/mL GLN-NP solutions were mixed with ...
At 20°C, rotenone is practically insoluble in water (0.2 mg/l) (see, however, Loeb and Engstrom-Heg, 1970) but readily soluble in chloroform (472 g/l) and acetone (66 g/l) and only slightly soluble in ethyl ether (4 g/l) and ethyl alcohol (2 g/l). Rotenone is highly ...
Give a simple test that would allow you to distinguish between the following pairs of anions. Tell what you would do and what you should observe for each anion. A. CO3^2- and SO4^2- B. Cl^- and SO4^- Explain how infra-red spectr...
Using the principle that polysaccharides are almost insoluble in high-concentration organic solutions, soluble impurities and most polysaccharides are separated. Methanol, ethanol and acetone are the most commonly used organic solvents. Polysaccharides with relatively high purity can be obtained through multip...
Asterisk indicates a significant difference from H2O. (d) Thin layer chromatography (TLC) analysis of the bioactive substance. A mixture of fractions 2 and 3 (in panel b) was further separated through preparative TLC. The motility score for sperm in each fraction are indicated below the TLC ...
A mixture of 9-fluorenone, phenol-d5 and b-mercaptopropionic acid was added to a 50 ml three-neck bottom flask equipped with a magnetic stirrer, reflux condenser and thermometer, and then concentrated sulphuric acid was slowly added dropwise with stirring. The mixture was heated at 55 °C ...
The vapour pressure of acetone at298Kis40mmofHg. Its mole fraction in a solution with alcohol is0.80. What is its vapour pressure in solution if the mixture obey Raoult's law? View Solution The vapour pressure of pure water at37∘Cis 47.1 torr. What is the vapour pressure of an aqueou...