Fuel (3) Flashcards
(7 cards)
1
Q
Suggest two reasons why is usually difficult to burn different hydrocarbon fuels efficiently in the same appliance
A
reason 1 - different viscosities
reason 2 - different boiling points
2
Q
which statement is correct
A
C - diesel oil and is used as a fuel for some trains
3
Q
Correct formula of molecule of a hydrocarbon
A
C
4
Q
As the number of carbon atoms in the molecules of a hydrocarbon increases..?
A
B - the boiling point of the hydrocarbon increase
5
Q
what is the formula of a molecule of ethene
A
B - C2H4
6
Q
a dilute solution of ethanol can be converted to a concentrated solution of ethanol by
A
B - fractional distillation
7
Q
ethene is converted to ethanol
state two conditions for this reaction.
A
- catalyst
- high temperature
- high pressure
