1} explain the preparation of method of Methane and Ethane :-
2} explain properties of Alkanes (required 2 points )
# quality of Answer required.
# no spamming
fatimamukhtar:
methane is prepared by heating anhydrous sodium acetate with soda lime,(NaOH+CaO) produces methane
Answers
Answered by
0
here is Ur quality answer mark brainlist if you find this helpful.
Industrial prep.
There are many technological methane production methods. Methane created from biomass in industrial plants via biological route is called biogas. A more synthetic method to produce methane is hydrogenatingcarbon dioxide through the Sabatier process. Methane is also a side product of the hydrogenation of carbon monoxide in the Fischer–Tropsch process, which is practiced on a large scale to produce longer-chain molecules than methane. Example of large-scale coal-to-methane gasification is the Great Plains Synfuels plant, started in 1984 in Beulah, North Dakota as a way to develop abundant local resources of low-grade lignite, a resource that is otherwise very hard to transport for its weight, ash content, low calorific value and propensity to spontaneous combustion during storage and transport.
Power to methane is a technology that uses electrical power to produce hydrogen from water by electrolysis and uses the Sabatier reaction to combine hydrogen with carbon dioxide to produce methane. As of 2016, this is mostly under development and not in large-scale use. Theoretically, the process could be used as a buffer for excess and off-peak power generated by highly fluctuating wind generators and solar arrays. The conversion efficiency of power to methane is 49–65%, and full power–methane–power cycle is 30–38%.
Laboratory synthesis
Although methane can in principle be produced by a variety of forcing methods, it is conveniently generated by protonation of methyl lithium and methylmagnesium iodide.
2.Physical property:-
Alkanes are not very reactive and have little biological activity; all alkanes are colorless and odorless.
Chemical Property:-
Alkanes are not very reactive when compared with other chemical species. This is because the backbone carbon atoms in alkanes have attained their octet of electrons through forming four covalent bonds (the maximum allowed number of bonds under the octet rule; which is why carbon's valence number is 4). These four bonds formed by carbon in alkanes are sigma bonds, which are more stable than other types of bond because of the greater overlap of carbon's atomic orbitals with neighboring atoms' atomic orbitals. To make alkanes react, the input of additional energy is needed; either through heat or radiation.
Industrial prep.
There are many technological methane production methods. Methane created from biomass in industrial plants via biological route is called biogas. A more synthetic method to produce methane is hydrogenatingcarbon dioxide through the Sabatier process. Methane is also a side product of the hydrogenation of carbon monoxide in the Fischer–Tropsch process, which is practiced on a large scale to produce longer-chain molecules than methane. Example of large-scale coal-to-methane gasification is the Great Plains Synfuels plant, started in 1984 in Beulah, North Dakota as a way to develop abundant local resources of low-grade lignite, a resource that is otherwise very hard to transport for its weight, ash content, low calorific value and propensity to spontaneous combustion during storage and transport.
Power to methane is a technology that uses electrical power to produce hydrogen from water by electrolysis and uses the Sabatier reaction to combine hydrogen with carbon dioxide to produce methane. As of 2016, this is mostly under development and not in large-scale use. Theoretically, the process could be used as a buffer for excess and off-peak power generated by highly fluctuating wind generators and solar arrays. The conversion efficiency of power to methane is 49–65%, and full power–methane–power cycle is 30–38%.
Laboratory synthesis
Although methane can in principle be produced by a variety of forcing methods, it is conveniently generated by protonation of methyl lithium and methylmagnesium iodide.
2.Physical property:-
Alkanes are not very reactive and have little biological activity; all alkanes are colorless and odorless.
Chemical Property:-
Alkanes are not very reactive when compared with other chemical species. This is because the backbone carbon atoms in alkanes have attained their octet of electrons through forming four covalent bonds (the maximum allowed number of bonds under the octet rule; which is why carbon's valence number is 4). These four bonds formed by carbon in alkanes are sigma bonds, which are more stable than other types of bond because of the greater overlap of carbon's atomic orbitals with neighboring atoms' atomic orbitals. To make alkanes react, the input of additional energy is needed; either through heat or radiation.
Answered by
0
hey... here's ur answer!!
1] Preparation Method of Methane ➡
the anhydrous sodium salt of a fatty acid when strongly heated with soda - lime, the alkane having one carbon atom less than the fatty acid is obtained.
CH3 COONa + NaOH / CaO = CH4 + Na2 CO3 ( methane)
Preparation Method of Ethane ➡
by the reaction of alkyl halide with sodium in the presence of dry ether
CH3I + 2Na = CH3 ---- CH3 + 2NaI
2] Properties of Alkanes
a) Methane, ethane, propane, butane are all gases at room temperature.
b) The melting point of alkanes increase with the increase in molecular mass.
hope it might be helpful !!
1] Preparation Method of Methane ➡
the anhydrous sodium salt of a fatty acid when strongly heated with soda - lime, the alkane having one carbon atom less than the fatty acid is obtained.
CH3 COONa + NaOH / CaO = CH4 + Na2 CO3 ( methane)
Preparation Method of Ethane ➡
by the reaction of alkyl halide with sodium in the presence of dry ether
CH3I + 2Na = CH3 ---- CH3 + 2NaI
2] Properties of Alkanes
a) Methane, ethane, propane, butane are all gases at room temperature.
b) The melting point of alkanes increase with the increase in molecular mass.
hope it might be helpful !!
Similar questions