How to receive ethane from acetylene

How to receive ethane from acetylene

Acetylene belongs to unsaturated hydrocarbons. Its chemical properties are defined by threefold communication. It is capable to react oxidations, replacements, accessions and polymerizations. Ethane – saturated hydrocarbon, for which natures of reaction of replacement on radical type, dehydrogenations and oxidations. At a temperature about 600 degrees Celsius it decays on hydrogen and eten.

It is required to you

- chemical equipment;
- catalysts;
- bromic water.

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Instruction

1
Acetylene, ethylene and ethane - in usual conditions colourless combustible gases. Therefore at first study safety measures during the work with volatiles. Do not forget to repeat a structure of molecules and chemical properties of alkynes (unsaturated hydrocarbons), alkenes and alkanes. Look, than they are similar and than differ. For receiving ethane you will need acetylene and hydrogen.

2
To make acetylene in vitro, carry out CaC2 calcium carbide decomposition. Can take it ready or receive by agglomeration of not extinguished lime with coke: Sao+3c=cac2+co - process proceeds at a temperature of 2500 °C, Sas2+2n2o=s2n2+sa (IT) 2.

Carry out high-quality reaction to acetylene - decolouration of bromic water or solution of permanganate of potassium.

3
You will be able to receive hydrogen in several ways:
- interaction of metals with acid: Zn+2 Nsl=znsl2+n2^

- in time reaction of alkali with metals which hydroxides possess amphoteric properties: Zn+2 NaOH+2 H2O=Na2 [Zn (IT) 4]+H2^

- water electrolysis for which increase in conductivity add alkali. Thus on the cathode hydrogen, and on the anode – oxygen is formed: 2 H2O=2 H2+O2.

4
For receiving from acetylene of ethane it is necessary to carry out hydrogen accession reaction (hydrogenation), considering thus properties of chemical bonds: at first from acetylene ethylene turns out, and then at further hydrogenation – ethane. For evident expression of processes work out and write down the equations of reactions:

C2H2+H2=C2H4
C2H4+H2=C2H6

Reaction of hydrogenation proceeds at the room temperature in the presence of catalysts – small shattered palladium, platinum or nickel.