The boiling points of alcohols increases as the chain length [blank_start]increases[blank_end] because there are [blank_start]more[blank_end] surface area contacts and stronger [blank_start]induced dipole-dipole[blank_end] interactions (London forces). Hydrogen bonds also increase the intermolecular force of attraction. The higher the forces of attraction the [blank_start]more[blank_end] energy needed to break the bonds.
Responda
increases
decreases
more
fewer
induced dipole-dipole
permanent dipole-dipole
permanent dipole-induced dipole
more
less
Questão 3
Questão
Which of these statements about alcohols are correct?
Responda
Volatility is where a substance can easily evaporate at RTP.
Hydrogen bonds decrease the volatility of an alcohol.
Hydrogen bonds increase the volatility of an alcohol.
The solubility of an alcohol decreases when the chain length increases.
Alcohols are non-polar molecules.
Volatility increases as the boiling point increases.
Questão 4
Questão
Fill in the state symbols for this [blank_start]combustion[blank_end] reaction.
C ₂H₅OH ([blank_start]l[blank_end]) + 3O₂ ([blank_start]g[blank_end]) ---> 2CO₂ ([blank_start]g[blank_end]) + 3H₂O ([blank_start]l[blank_end])
Responda
l
g
s
aq
g
l
s
aq
g
l
s
aq
l
g
s
aq
combustion
oxidation
reduction
Questão 5
Questão
What is a potential reagent for the oxidation of primary and secondary alcohols?
Responda
K₂Cr₂O₇
CO₂
HCl
C₂H₆
Questão 6
Questão
What is the functional group of an ester?
Responda
-OH
-COOR
-COOH
O-H
O=H
Questão 7
Questão
Label the reactants and products of this reaction.
Esterification is reversible and has a slow rate of reaction.
Responda
True
False
Questão 9
Questão
For esterification to work a nickel catalyst is added to a test tube in a 100`C water bath.
Responda
True
False
Questão 10
Questão
All large molecule Esters are soluble in water.
Responda
True
False
Questão 11
Questão
Dehydration is a type of [blank_start]elimination[blank_end] reaction where water is [blank_start]lost[blank_end] from an organic compound.
The alcohols are heated under reflux with a strong [blank_start]acid[blank_end] catalyst (H₂SO₄) at [blank_start]170[blank_end]'C.
π-bonds form between adjacent [blank_start]carbon[blank_end] atoms and a [blank_start]water[blank_end] molecule is released from the H in the acid and the OH in the alcohols functional group.
Responda
elimination
lost
170
acid
water
carbon
Questão 12
Questão
The general formula for halide substitution is
ROH + HX --> RX + H₂O
Responda
True
False
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