Study Set Content:
- can be prepared in a laboratory by cracking of hydrocarbons such as kerosene or candle wax.
Ethane gas
Preparation of Ethane from Ethanol (Ethyl Alcohol)
Ethane can also be prepared in a laboratory by heating ethanol (or ethyl alcohol) with excess of concentrated sulphuric acid atomic 160-170C.
Formula of preparation of ethane
- C2H5OH + H2SO4 160-170C CH2 = CHS + H2O
Concentrated H2SO4 acts as a
dehydrating agent
- oncentrated H2SO4 acts as a dehydrating agent. It removes one molecule of (blank) from ethanol molecule.
water
Ethane, Ethene, Ethyne odor
odorless, sweet odor, faint ethereal odor
Ethane, Ethene, Ethyne color and appearance
colorless gas, colorless gas, colorless gas
an organic chemical compound composed exclusively of hydrogen and carbon atoms.
Hydrocarbon
compounds consisting of carbon linked either in a single or a branched chain.
Acyclic or open chained hydrocarbon
are compounds that have carbon atoms linked in a closed polygon ring.
Cyclic or closed chained hydrocarbon
contain only carbon-carbon single bonds. The simplest type of organic compounds. (Alkanes)
Saturated Hydrocarbons
contain carbon-carbon double or triple bonds. Chemically more reactive than saturated ones because of the presence of carbon-carbon multiple bonds in such compounds and these multiple bonds serve as locations where chemical reactions can occur.
Unsaturated Hydrocarbons
Alkanes
- General Formula:
- CnH2n+2 (no rings)
- Alkanes are saturated what type of hydrocarbons
saturated
- Each carbon holds the maximum number of hydrogen atoms
- Each carbon holds the maximum number of hydrogen atoms
Contain only carbon-carbon single bonds
Alkanes
- Most chemical reactions require a functional group :handle” to proceed.
Alkanes
Since alkanes don’t really have functional groups, they aren’t very useful in many
- biologically important processes.
Since alkanes undergo combustion easily, they are a good source of
energy
also provide the raw materials for the production of many other more complex substances
Alkanes
