Preparation Of Methane Gas_basti Sheikh

Govt. Girls Sr. Sec. School, Basti Sheikh , Jalandhar City

Project on Preparation of methane gas Submitted By: Class – 9th A Prerna, Gagandeep Kaur, Sandeep Kaur , Dimple. Guided By: Mrs. Neelam Madam(Science Mistress)

Methane(CH4) Gas It is the simplest hydrocarbon.It is known as Marsh Gas(because it is found in marshy places).It is the first member of the homologus series. Methane gas shows the green house effect also.One molecule of methane traps 20 times more heat radiation than carbon dioxide.

Laboratory Preparation of Methane(CH4) Gas  REACTANT

Hydroxide.

:-Sodium acetate,Sodium

 REACTION:

CH3COONa+NaOH Na2CO3

CaO,

CH4( ) +

Molecular structure of Methane

PROCEDURE: When Sodium acetate is heated with soda lime(three parts Calcium oxide, one part sodium Hydroxide),methane gas is produced.Sodium Hydroxide acts as reactant and Calcium Oxide keeps the gas dry.

A mixture of sodium acetate and soda lime are taken in a glass tube and heated. Methane gas is evolved which is collected by downward displacement of water. The downward displacement method makes other soluble gases or salts evaporating from the tube to be absorbed. Also it must be remembered that methane is insoluble in water, hence the downward displacement technique

Properties of Methane Gas Physical properties of methane Methane (CH4) is an odourless, colourless, tasteless gas. It is lighter than air. It is a non-polar molecule and is insoluble in water. It dissolves in non-polar solvents like alcohol, carbon tetrachloride, etc. Chemical properties of methane

1. Combustion : methane burns in air with a blue flame. We have seen earlier that in sufficient amount of oxygen, methane burns to give carbon dioxide and water. In insufficient oxygen it gives out carbon monoxide. Methane produces a good amount of heat when it undergoes combustion. This is the reason why it is used as fuel. 2. Reactivity : Methane is quite unreactive, except with fluorine, chlorine, etc. With these it undergoes substitution reactions

Uses of Methane Gas  Because

of its excellent burning, methane is used as a cooking gas.  Methane is used to produce carbon dioxide gas.  Methane is used to produce carbon black used in rubber industries.

Bibliography: 1.Text Book of science P.S.E.B,9th Class. 2.Web sites www.google.com leading to Image search