Write a balanced chemical equation for the following: Producing ethane from bromo-ethane using Zn / Cu couple in alcohol.

Alkyl halides are used to prepare respective alkanes. Bromo-ethane (ethyl bromide) gets reduced in the presence of Zn / Cu couple in alcohol and converts into ethane and forms hydrogen bromide. C 2 H 5 Br + 2 H → Zn / Cu couple in alcohol C 2 H 6 + HBr

Write a balanced chemical equation for the following: Complete combustion of ethane.

Ethane is used as a fuel to get energy. Complete combustion of ethane liberates carbon dioxide along with the formation of water as vapours due to high temperatures. The combustion of ethane gives heat energy. 2 C 2 H 6 + 5 O 2 → 4 CO 2 + 2 H 2 O + Heat

Write a balanced chemical equation for the preparation of ethene from bromoethane.

Ethene is obtained by dehydrohalogenation of bromoethane in the presence of alcoholic potassium hydroxide. Ethene is an unsaturated compound having a double bond. 2 CH 3 CH 2 Br + KOH → Alcohol C 2 H 4 + KBr + H 2 O

Arrange the following according to the instruction given in bracket: Ethane, methane, ethene, ethyne. (In the increasing order of the molecular weight) [ H = 1 , C = 12 ]

The molecular masses of the compounds are: Ethane C 2 H 6 = 30 Methane CH 4 = 16 Ethene C 2 H 4 = 28 Ethyne C 2 H 2 = 26 The increasing order of molecular weight is: Methane < Ethyne < Ethene < Ethane

Name the saturated hydrocarbon containing two carbon atoms.

Ethane is a saturated hydrocarbon containing two carbon atoms. A hydrocarbon in which all the carbon-carbon bonds are single bonds are known as saturated compounds. Alkanes are saturated compounds with general formula C n H 2 n + 2 . Hence, a saturated hydrocarbon containing two carbon atoms is C 2 H 6 which is known as ethane.

Write a balanced chemical equation the following reaction: Chlorine gas is reacted with ethene.

Ethene reacts with chlorine gas to form dichloroethane. Ethene undergoes addition reaction. Law of conservation of mass is obeyed while balancing an equation. The balanced equation for the following reaction is: CH 2 = CH 2 + Cl 2 → CH 2 Cl - CH 2 Cl

State one relevant reason for the following: Soda-lime is preferred to sodium hydroxide in the laboratory preparation of methane.

In a laboratory, methane is prepared by heating the mixture of sodium acetate and soda-lime. Soda-lime is a mixture of sodium hydroxide and calcium oxide. Since, alone sodium hydroxide is a deliquescent substance that absorbs moisture from the atmosphere and becomes liquid and will affect the production of methane instead soda-lime absorbs less water and makes the production effective.