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Why is it difficult to locate the hydrogen atoms on the electron density map of ethanol?
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What causes volume contraction between ethanol and water?
Hydrogen bonds are formed between water and ethanol molecules, the solution become more "packed"; the density increase and the volume decrease.
Why ethanol with molar mass of 46gmol boils at 78 degree Celsius than water with molar mass og 18gmol boils at 100 degree Celsius?
Hydrogen bonds in water are much stronger than in ethanol. For the same reason the density of the liquid is also higher.
Do water acid mercury and alcohol have the same density?
No. They have very different densities. There are several types of alcohol, but for these purposes, we will use ethanol, the alcohol found in drinks. Density of water ≈ 1g/cm3 Density of ethanol = 0.789g/cm3 Density of mercury = 13.5 g/cm3 So water is about 20% denser than alcohol, and mercury is more than 13 times denser than water. Note that the density given from ethanol is for pure ethanol. Most alcoholic beverages are mixtures, with densities between those of water and pure ethanol.
In terms of bonding why does ethanol and water miscible?
The polar group -OH of ethanol is bonded to water by hydrogen bonds.
What are the compoents of ethanol?
Ethanol consists of 2 atoms of carbon(C),5 atoms of hydrogen(H) and an hydroxide(OH)
Does ethanol have a permanent dipole?
Yes. the -OH group. The highly electronegative oxygen hoards electron density away from the hydrogen leaving a partial positive charge there. This is why ethanol is a polar compound miscible with water.
Why is ethanol miscible with water?
Ethanol : C2H5-O-H Water : O-H-O One of the Oxygen atom in water can form a Hydrogen bond with the last Hydrogen atom as shown above. Hydrogen bonds are the electrostatic forces of attraction between an electron-deficient hydrogen bonded to a very electronegative atom and the lone pair of a neighbouring very electronegative atom. In Ethanol, the final Hydrogen is bonded with Oxygen, which is a very electronegative atom, therefore the Hydrogen atom is electron-deficient because the shared electron pair is attracted very close to the Oxygen and hence creates a strong dipole moment. In water, both the Oxygen atoms are very electronegative and will attract the positive end of Ethanol, which is the Hydrogen to form Hydrogen bond. Hydrogen bonds are much stronger than van der Waals' forces or permanent dipole attraction.
Why does water form more hydrogen bonds than ethanol?
The hydrogen bonding effect is weaker between ethanol molecules than between water molecules. Both molecules have a "bent" structural pattern in the bonds formed with the oxygen, so we must consider the effects of the two surrounding groups. In water, the oxygen atom is surrounded by two hydrogen atoms, each donating equal amounts of electron density to the oxygen atom. In ethanol, the oxygen atom is surrounded by one hydrogen atom and one organic CH2CH3 group. Principles of organic chemistry dictate that the larger organic group will donate more electron density to the electronegative oxygen atom, thereby stabilizing the dipole between the oxygen and hydrogen atoms. This results in an overall decrease in the magnitude of the partial charge on the hydrogen atom, which is the source of hydrogen bonding.
What causes volume contraction between ethanol and water?
Hydrogen bonds are formed between water and ethanol molecules, the solution become more "packed"; the density increase and the volume decrease.
What is the density of 95 ethanol?
According to the CRC Handbook, 70th edition, the density of 94% ethanol is 0.8070 g/ml and the density of 96% ethanol is 0.8013 g/ml. We can interpolate to find that the 95% ethanol should be 0.8042 g/ml.
Is hexane more dense than ethanol?
No, hexane is less dense than ethanol- hexane has a density of 0.6548g/mL and ethanol has a density of 0.789g/mL, so hexane will float on top of ethanol.
What volume of ethanol has a mass of 15.5 grams?
15.5 gram ethanol x 1 mL/0.789 (density) = 19.65 mL the density of ethanol is 0.789g/mL
What is the name of a substance formed by burning hydrogen and ethanol in air?
what is the substance formad when burning both hydrogen and ethanol in the air
Density of ethanol?
0.790 at 20C
How many elements are there in ethanol?
There are 3 elements in ethanol: Hydrogen, Oxygen, and Carbon.
Which has more density vegetable oil or ethanol?
The vegetable oil is more dense than ethanol. Vegetable has a density of around 0.9 g/cm3, which varies very slightly depending on the oil. The density of ethanol is 0.789 g/cm3
If ethanol has a density of 789 g then what is the mass of 225 g of ethanol?
225 g
