Get premium membership and access questions with answers, video lessons as well as revision papers.
Procedure:
- A sample of Methane (CH4) is placed in a boiling tube and to it is added some bromine gas.
- The tube is stoppered, and the mixture shaken, then allowed to stand and exposed to ultra-violet lamp.
Observations
- The red colour of Bromine begins to fade, and the pungent smell of hydrogen bromide (HBr) gas is detectable when the stopper is removed.
- A moist blue litmus paper also turns red on dipping into the resultant mixture.
Equation
CH4(g) + Br2(g) ? CH3Br(g) + HBr(g)
Explanation - For a chemical reaction to occur, bonds must be broken. - The light energy (V.V. light) splits the Bromine molecule into free atoms, which are very reactive species. - Similarly the energy breaks the weaker carbon – hydrogen bonds, and not the stronger carbon – carbon bonds. - The free bromine atoms can then substitute (replace one of the hydrogen atoms of methane, resulting unto bromomethane and hydrogen bromide gas.
Kavungya answered the question on April 27, 2019 at 12:42
- List the uses of methane.(Solved)
List the uses of methane.
Date posted: April 27, 2019. Answers (1)
- Explain the Cracking of Alkanes.(Solved)
Explain the Cracking of Alkanes.
Date posted: April 27, 2019. Answers (1)
- What are alkenes?(Solved)
What are alkenes?
Date posted: April 27, 2019. Answers (1)
- Outline the rules in the nomenclature of alkenes.(Solved)
Outline the rules in the nomenclature of alkenes.
Date posted: April 27, 2019. Answers (1)
- Explain Branching isomerism in alkenes.(Solved)
Explain Branching isomerism in alkenes.
Date posted: April 27, 2019. Answers (1)
- What is Positional isomerism in alkenes?(Solved)
What is Positional isomerism in alkenes?
Date posted: April 27, 2019. Answers (1)
- Explain the combustion of ethene.(Solved)
Explain the combustion of ethene.
Date posted: April 27, 2019. Answers (1)
- Describe the preparation process of ethene(Solved)
Describe the preparation process of ethene.
Date posted: April 27, 2019. Answers (1)
- Explain the reaction of Ethene with Hydrogen.(Solved)
Explain the reaction of Ethene with Hydrogen.
Date posted: April 27, 2019. Answers (1)
- Explain the reaction of ethene With sulphuric acid.(Solved)
Explain the reaction of ethene With sulphuric acid.
Date posted: April 27, 2019. Answers (1)
- Explain the reaction of ethene with chlorine.(Solved)
Explain the reaction of ethene with chlorine.
Date posted: April 27, 2019. Answers (1)
- Explain the reaction of ethene with acidified potassium permanganate.(Solved)
Explain the reaction of ethene with acidified potassium permanganate.
Date posted: April 27, 2019. Answers (1)
- Explain the reaction of ethene with Bromine gas.(Solved)
Explain the reaction of ethene with Bromine gas.
Date posted: April 27, 2019. Answers (1)
- Describe the Polymerisation of ethene.(Solved)
Describe the Polymerisation of ethene.
Date posted: April 27, 2019. Answers (1)
- What are Polymers?(Solved)
What are Polymers?
Date posted: April 27, 2019. Answers (1)
- Give the uses of polythene.(Solved)
Give the uses of polythene.
Date posted: April 27, 2019. Answers (1)
- State the Test for Alkenes.(Solved)
State the Test for Alkenes.
Date posted: April 27, 2019. Answers (1)
- What are alkynes?(Solved)
What are alkynes?
Date posted: April 27, 2019. Answers (1)
- State two examples of Alkynes.(Solved)
State two examples of Alkynes.
Date posted: April 27, 2019. Answers (1)
- Describe the Nomenclature of alkynes.(Solved)
Describe the Nomenclature of alkynes.
Date posted: April 27, 2019. Answers (1)