name the fifth member of alkyne series ?
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4
Explanation:
Since the first member of alkyne series has 2 carbon atoms in it, therefore, the fifth member of alkyne series will have 6 carbon atoms in it. So, if we substitute n = 6 in the general formula CnH2n – 2 then the molecular formula of the fifth member of the alkyne series will be C6H2 × 6 – 2 or C6H10.
Answered by
1
The fifth member of the alkyne series is Hexyne (
).
Explanation:
- The general formula of alkynes is
, where n = 2, 3, 4, 5, 6 ...
- For the fifth member of the alkyne series n = 6
- Put n = 6 in the general formula of alkynes is
- The fifth member of the alkyne series =
- The fifth member of the alkyne series =
The fifth member of the alkyne series = 
- Hexyne is an unsaturated hydrocarbon consisting of a six-carbon straight chain with a terminal alkyne.
- The molecular formula of Hexyne is
.
- At room temperature, Hexyne is liquid and is pale yellow or colourless.
- Hexyne is used in pharmaceuticals, agrochemicals, and in perfumery industries to produce complex molecules.
Unsaturated hydrocarbons :
- The unsaturated hydrocarbons containing one or more triple bonds are called alkynes. For example, ethyne (C₂H₂), propyne (
), etc.
- Alkynes have less number of hydrogen atoms as compared to alkanes and alkenes.
- The first 3 members of Alkynes are gases, the next eight members are liquids and the remaining higher members are solids.
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