Answer
Verified
378k+ views
Hint: Acetylene is the simplest alkyne and a hydrocarbon. This colourless gas (lower hydrocarbons are inherently gaseous) is commonly used as a fuel and chemical building block. It is generally treated as a solution since it is unstable in its pure form.
Complete answer:
Let us find the correct option, by checking the product of each option.
(A) ${\text{HCOOK}}\,\,{\text{ + }}\,{{\text{H}}_{\text{2}}}{\text{O}}\xrightarrow{{\text{\Delta }}}\,{{\text{H}}_{\text{2}}}\,{\text{ + }}\,{\text{C}}{{\text{O}}_{\text{2}}}\,{\text{ + }}\,{\text{KOH}}$
Potassium formate reacts with water to give hydrogen, Carbon dioxide and Potassium hydroxide.
(B) \[{\text{2CH}}{{\text{I}}_{\text{3}}}\, + \,6{\text{Ag}}\,\xrightarrow[\Delta ]{}\,{\text{CH}}\, \equiv \,{\text{CH}}\, + \,{\text{6AgI}}\]
Iodoform reacts with silver to give acetylene and silver iodide.
(C) ${\text{C}}{{\text{H}}_{\text{3}}}{\text{C}}{{\text{H}}_{\text{2}}}{\text{OH}}\,\xrightarrow[{{\text{443K}}}]{{{\text{Conc}}{\text{.}}{{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}}}\,{\text{C}}{{\text{H}}_{\text{2}}}\, = \,{\text{C}}{{\text{H}}_{\text{2}}}\, + \,{{\text{H}}_{\text{2}}}{\text{O}}$
Ethanol on reacting with concentrated sulphuric acid at ${\text{443}}\,{\text{K}}$gives ethylene and water.
(D) ${\text{B}}{{\text{e}}_{\text{2}}}{\text{C}}\,{\text{ + }}\,{{\text{H}}_{\text{2}}}{\text{O}}\, \to \,{\text{C}}{{\text{H}}_{\text{4}}}\,{\text{ + }}\,{\text{2BeO}}$
Beryllium carbide reacts with water to give methane and beryllium oxide.
Hence, acetylene is obtained by \[{\text{2CH}}{{\text{I}}_{\text{3}}}\, + \,6{\text{Ag}}\,\xrightarrow[\Delta ]{}\,{\text{CH}}\, \equiv \,{\text{CH}}\, + \,{\text{6AgI}}\].
So, the correct option is B.
Additional information:
To prevent accidental leakage and an explosive atmosphere, acetylene cylinders should not be stored in small spaces, enclosed cars, garages, or houses.
Acetylene should not be shipped in copper pipes because copper catalyses the decomposition of acetylene.
Acetylene is also extremely flammable, like most light hydrocarbons, which explains why it's used in welding. Under certain conditions, acetylene can react in an exothermic addition-type reaction to form a variety of products, including benzene and/or vinylacetylene, possibly in addition to carbon and hydrogen.
Note:
While pure acetylene is odourless, impurities in commercial grades give it a distinct odour. Since the two carbon atoms are bonded together in a triple bond, acetylene is unsaturated as an alkyne. Acetylene is not particularly toxic, but it does contain toxic impurities such as traces of phosphine and arsine when made from calcium carbide, giving it a distinct garlic-like odour.
Complete answer:
Let us find the correct option, by checking the product of each option.
(A) ${\text{HCOOK}}\,\,{\text{ + }}\,{{\text{H}}_{\text{2}}}{\text{O}}\xrightarrow{{\text{\Delta }}}\,{{\text{H}}_{\text{2}}}\,{\text{ + }}\,{\text{C}}{{\text{O}}_{\text{2}}}\,{\text{ + }}\,{\text{KOH}}$
Potassium formate reacts with water to give hydrogen, Carbon dioxide and Potassium hydroxide.
(B) \[{\text{2CH}}{{\text{I}}_{\text{3}}}\, + \,6{\text{Ag}}\,\xrightarrow[\Delta ]{}\,{\text{CH}}\, \equiv \,{\text{CH}}\, + \,{\text{6AgI}}\]
Iodoform reacts with silver to give acetylene and silver iodide.
(C) ${\text{C}}{{\text{H}}_{\text{3}}}{\text{C}}{{\text{H}}_{\text{2}}}{\text{OH}}\,\xrightarrow[{{\text{443K}}}]{{{\text{Conc}}{\text{.}}{{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}}}\,{\text{C}}{{\text{H}}_{\text{2}}}\, = \,{\text{C}}{{\text{H}}_{\text{2}}}\, + \,{{\text{H}}_{\text{2}}}{\text{O}}$
Ethanol on reacting with concentrated sulphuric acid at ${\text{443}}\,{\text{K}}$gives ethylene and water.
(D) ${\text{B}}{{\text{e}}_{\text{2}}}{\text{C}}\,{\text{ + }}\,{{\text{H}}_{\text{2}}}{\text{O}}\, \to \,{\text{C}}{{\text{H}}_{\text{4}}}\,{\text{ + }}\,{\text{2BeO}}$
Beryllium carbide reacts with water to give methane and beryllium oxide.
Hence, acetylene is obtained by \[{\text{2CH}}{{\text{I}}_{\text{3}}}\, + \,6{\text{Ag}}\,\xrightarrow[\Delta ]{}\,{\text{CH}}\, \equiv \,{\text{CH}}\, + \,{\text{6AgI}}\].
So, the correct option is B.
Additional information:
To prevent accidental leakage and an explosive atmosphere, acetylene cylinders should not be stored in small spaces, enclosed cars, garages, or houses.
Acetylene should not be shipped in copper pipes because copper catalyses the decomposition of acetylene.
Acetylene is also extremely flammable, like most light hydrocarbons, which explains why it's used in welding. Under certain conditions, acetylene can react in an exothermic addition-type reaction to form a variety of products, including benzene and/or vinylacetylene, possibly in addition to carbon and hydrogen.
Note:
While pure acetylene is odourless, impurities in commercial grades give it a distinct odour. Since the two carbon atoms are bonded together in a triple bond, acetylene is unsaturated as an alkyne. Acetylene is not particularly toxic, but it does contain toxic impurities such as traces of phosphine and arsine when made from calcium carbide, giving it a distinct garlic-like odour.
Recently Updated Pages
How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE
Mark and label the given geoinformation on the outline class 11 social science CBSE
When people say No pun intended what does that mea class 8 english CBSE
Name the states which share their boundary with Indias class 9 social science CBSE
Give an account of the Northern Plains of India class 9 social science CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Trending doubts
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Which are the Top 10 Largest Countries of the World?
Give 10 examples for herbs , shrubs , climbers , creepers
Difference Between Plant Cell and Animal Cell
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
Change the following sentences into negative and interrogative class 10 english CBSE
How do you graph the function fx 4x class 9 maths CBSE
Write a letter to the principal requesting him to grant class 10 english CBSE