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Ethylene glycol (HOCH2CH2OH), the major substance in antifreeze, has a normal boiling point of 198 C. By comparison, ethyl alcohol (CH3CH2OH) boils at 78C at atmospheric pressure. Ethylene glycol dimethyl ether (CH3OCH2CH2OCH3) has a normal boiling point of 83 C and ethyl methyl ether (CH3CH2OCH3) has a normal boiling point of 11.
A) Explain why replacement of a hydrogen on the oxygen by CH3 generally results in a lower boiling point.
B) What are the major factors responsible for the difference in boiling points of the two ethers.
A solution contained KIO3 and excess KI. 25 cm3 of this solution were acidified and the liberated I2 required 26.8 cm3 of 0.1 M Na2S2O3 for complete recaction.
Calculate the volume of all gases evolved by the complete oxidation of 0.380 of the amino acid alanine if the products are liquid water, nitrogen gas, and carbon dioxide gas; the total pressure is 1.02 ; and = 295.
Diamond has a face-centered cubic unit cell, with four more C atoms in tetrahedral holes within the cell. Densities of diamonds vary from 3.01 g/cm3 to 3.52 g/cm3 because C atoms are missing from some holes.
In a second 50.00mL aliquot, the ClO4- was reduced to Cl- with V2(SO4)3. Titration of the reduced sample required 40.12mL of the AgNO3 solution. Calculate the %KCl and %KClO4 in the sample
Alkenes contain double bonds while alkynes contain triple bonds, Naming compounds containing double as well as triple bonds
A gas occupying a volume of 263 mL at a pressure of 0.970 atm is allowed to expand at constant temperature until its pressure reaches 0.541 atm. What is its final volume?
calculate the total pressure when 1 l of ch4 at stp and four litre of oxygen at stp was combined in anbsp container of
The general rate law is: rate=k[A]^2. How long is the third half-life of the reaction if [A]0 is 0.080M and the first half life is 22 min
What mass of sucrose should be combined with 474 g of water to make a solution with an osmotic pressure of 8.20 atm at 310K ?
Use the Henderson-Hasselbalch equation to calculate the pH of a solution that is 14.5 g of HF and 23.0 g of NaF in 125 mL of solution.
How much heat is required to convert 83 g of nitrogen gas to NO2 at constant temperature and pressure in the presence of excess oxygen
what volume of oxygen is comsumed when 3.00 moles of carbon monoxide is produced in 2C +O2 -> 2CO
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