Can anyone tell me which of these substances are polar and which are nonpolar???
SOLVENTS:
water
ethanol (C2H5OH)
acetone ((CH3)2CO)
hexane (C6H14)
vegetable oil (CH3(CH2)7CH= CH(CH2)7COOH)
isopropyl alcohol (C3H7OH)
SOLUTES
citric acid (CH2(COOH)- COH(COOH)- CH2(COOH))
gelatin (protein)
glycerine (C3H5(OH)3)
glycine (NH2CH2COOH)
iodine (I2)
oleic acid (CH3(CH2)7CH= CH(CH2)7COOH)
sodium chloride
sucrose (C12H22O11)
Vaseline petroleum jelly (hydrocarbon mixture)
sodium bicarbonate (NaHCO3)
corn starch
2007-06-21 10:16:36 · 2 answers · asked by sillysalamander101 2 in Science & Mathematics ➔ Chemistry
Try to get a periodic table which shows electronegativity numbers. For a given bond between 2 elements, subtract the electronegativity numbers from each other. If the difference is great than 0.5, the bond will likely be polar.
Without going through your whole list, items such as
water, ethanol and sodium chloride are clearly polar.
acetone, hexane, and oils are non-polar.
2007-06-21 10:22:58 · answer #1 · answered by reb1240 7 · 0⤊ 0⤋
water = polar
ethanol = polar
acetone = polar
hexane = nonpolar
vegetable oil = polar
isopropyl alcohol = polar
citric acid = gelatin = glycerine = glycine = polar
iodine = nonpolar
oleic acid = sodium chloride =sucrose = polar
petroleum jelly = nonpolar
sodium bicarbonate = corn starch = polar
2007-06-21 10:54:18 · answer #2 · answered by steve_geo1 7 · 0⤊ 2⤋