Chemistry
State the observation : Bromine vapours are passed into a soln. of ethyne in carbon tetrachloride.
Organic Chemistry
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Answer
Reddish brown bromine dissolved in water turns colourless when ethyne is passed through it.
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Related Questions
Select the correct answer from the choices given :
(i) The catalyst used for conversion of ethene to ethane is commonly ………….. [nickel/iron/cobalt]
(ii) Acetaldehyde when oxidized with acidified potassium dichromate, forms ………….. [ester/ethanol/acetic acid]
(iii) Ethanoic acid reacts with ethanol in presence of conc. H2SO4, so as to form a compound and water. The chemical reaction which takes place is called ………….. [dehydration/hydrogenation/esterification]
From – Ethyne, ethanol, acetic acid, ethene, methane. Choose the one which relates to (i) to (iv).
(i) An unsaturated hydrocarbon used for welding purposes.
(ii) An organic compound whose functional group is carboxyl.
(iii) A hydrocarbon which on catalytic hydrogenation gives a saturated hydrocarbon.
(iv) An organic compound used as a thermometric liquid.
(i) Why is pure acetic acid known as glacial acetic acid?
(ii) Give a chemical equation for the reaction between ethyl alcohol and acetic acid.
Write balanced chemical equations for the following :
(i) Reaction between 1, 2 – dibromoethane and alcoholic potassium hydroxide.
(ii) Monochloro ethane is hydrolysed with aqueous KOH.
(iii) A mixture of sodalime and sodium acetate is heated.
(iv) Ethanol under high pressure and low temperature is treated with acidified potassium dichromate.
(v) Water is added to calcium carbide.
(vi) Ethanol reacts with sodium at room temperature.