Is naphthalene acidic or basic?
Is naphthalene acidic or basic?
The pKa’s of benzoic acid and 2-naphthol are 4.17 and 9.5, respectively, while naphthalene is a neutral compound. Since benzoic acid is much more acidic than 2-naphthol, the weak base, sodium bicarbonate, will be able to effectively remove benzoic acid’s acidic hydrogen.
What is the pH of naphthalene?
3.6
Executive summary: The pH of 1,4-Naphthalenedicarboxylic acid at 10% in water is 3.6 (according to OECD 122 and DIN 19268:2007-05).
What is the pKa of 2-naphthol?
This might be caused by the absence of any dissociable functional groups on both the adsorbate and adsorbent[4] in the pH range 2-7; the dissociation constant, pKa, for 2-naphthol is 9.5.
Is naphthalene a neutral compound?
Naphthalene, on the other hand, is a neutral organic compound, and therefore is not soluble in water or the aqueous solutions that will be produced throughout the experiment.
Is naphthalene soluble in dichloromethane?
Naphthalene* (a neutral compound*) remained dissolved in the dichloromethane* (CH2Cl2) solution. Neutral compounds do not undergo salt formation. The dichloromethane solution should be washed with water to remove water-soluble inorganic impurities, then dried, and the excess dichloromethane removed.
Is naphthalene soluble or insoluble?
Naphthalene is a nonpolar compound. Thus, it is insoluble in highly polar solvents like water.
How do you make naphthalene from naphthol?
Traditionally, 2-naphthol is produced by a two-step process that begins with the sulfonation of naphthalene in sulfuric acid: C10H8 + H2SO4 → C10H7SO3H + H2O. The sulfonic acid group is then cleaved in molten sodium hydroxide: C10H7(SO3H) + 3 NaOH → C10H7ONa + Na2SO3 + 2 H2O.
Which derivative is used for identification of naphthalene?
Most naphthalene is derived from coal tar.
What are the elements make up of naphthalene?
naphthalene, the simplest of the fused or condensed ring hydrocarbon compounds composed of two benzene rings sharing two adjacent carbon atoms; chemical formula, C10H8.
Can naphthalene sublime?
Naphthalene is a solid that sublimes at standard atmospheric temperature with the sublimation point at around 80 °C or 176 °F. At low temperature, its vapour pressure is high enough, 1 mmHg at 53 °C, to make the solid form of naphthalene evaporate into gas.
What are the dangers of naphthalene?
Naphthalene has been shown to cause tissue damage and cancer in the nasal passages and lungs of rats and mice exposed to high levels in laboratory studies. It is considered a possible carcinogen for humans, although there is not yet sufficient evidence to prove it causes cancer in humans.
What is PKA protein?
In cell biology, protein kinase A (PKA) is a family of enzymes whose activity is dependent on cellular levels of cyclic AMP (cAMP). PKA is also known as cAMP-dependent protein kinase (EC 2.7.11.11). Protein kinase A has several functions in the cell, including regulation of glycogen, sugar, and lipid metabolism.
What is the chemical structure of naphthalene?
Naphthalene, the simplest of the fused or condensed ring hydrocarbon compounds composed of two benzene rings sharing two adjacent carbon atoms; chemical formula, C10H8.
What is the structure of naphthalene?
The molecular structure of naphthalene is that of two benzenebenzene. , colorless, flammable, toxic liquid with a pleasant aromatic odor. It boils at 80.1°C; and solidifies at 5.5°C;. Benzene is a hydrocarbon, with formula C6H6.
