Chemistry
(a) State why ethyne burns in oxygen with a sooty flame?
(b) Write the balanced chemical equation when water is added to calcium carbide.
Organic Chemistry
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Answer
(a) Ethyne being a hydrocarbon contains carbon hence, all the carbon particles do not oxidise completely. Thus, it burns with sooty flame.
(b)
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Rahul performed an experiment for the preparation of sulphuric acid. Answer the following questions pertaining to it.
(a) Name the process which is involved in this experiment used for the large scale manufacturing of sulphuric acid.
(b) Which property of sulphuric acid accounts for its use as a dehydrating agent?
(c) Concentrated sulphuric acid acts as both an oxidising agent and a non-volatile acid. Write one equation each to illustrate the above mentioned properties of sulphuric acid.
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(b) Lead, used in electrical circuits in joining metals.
(c) Copper, in electrical appliances or household vessels.
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(a) when calcium carbide is hydrolysed.
(b) when ethene undergoes hydrogenation.
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(b) Barium sulphate from barium chloride and sodium sulphate.
(c) Copper sulphate from copper and concentrated sulphuric acid.