The number of mole of ethanol present in the beaker is 0.217 mole
Description of mole The mole of a substance is related to it's mass and molar mass according to the following equation: Mole = mass / molar mass
How to determine the mole of C₂H₅OH From the question given above, the following data were obtained: Mass of C₂H₅OH = 10 g Molar mass of C₂H₅OH = (12×2) + (1.01×5) + 16 + 1.01 = 46.06 g/mol Mole of C₂H₅OH =?
Mole = mass / molar mass Mole of C₂H₅OH = 10 / 46.06 Mole of C₂H₅OH = 0.217 mole
The water molecules gets trapped in the crystal structure to be analysed and will give a peak in the spectra at about 3500 /cm , and there by hindering with the IR spectra of the sample to be analysed .
The second problem with the contamination of the sample with water is , that water makes the potassium bromide disc opaque which will decrease the absorption of the IR by the sample .
Polar covalent bonding is a type of chemical bond where a pair of electrons is unequally shared between two atoms. ... If the electronegativity of two atoms is basically the same, a nonpolar covalent bond will form, and if the electronegativity is slightly different, a polar covalent bond will form.
