Hydrocarbons which will react with Tollen's reagent conform to the general formula
C\(_n\)H\(_{2n}\)
C\(_n\)H\(_{2n + 2}\)
C\(_n\)H\(_{2n - 2}\)
C\(_n\)H\(_{2n + 1}\)OH
Explanation
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Discussions (17)
The answer is C
Tollen's reagent (ammonical silver nitrate) is a reagent used to differentiate between aldehydes and ketones.
Tollen's reagent reacts with terminal alkynes like ethyne, prop 1 yne, pent 1 yne...to form silvery precipitate.
Alkanes, Alkenes, Alcohols and non terminal alkyne do not react with tollen's reagent.
This is confusing. I thought tollens reagent is used to test for aldehyde(Alana), ketones, or terminal alkynes.
Tollens reagent doesnt react wit alcohol
In the option(option C), the most sutable should be the general formula for alkyne
But it is clearly stated there that hydrocarbons which react with tollens reagent.Alkanols are not hydrocarbons because of the presence of oxygen so the answer is C
The correct option is C. CnH2n-2
This is because:
* Tollen's reagent is used to identify terminal alkynes.
* Terminal alkynes have a triple bond at the end of the carbon chain.
* The general formula for alkynes is CnH2n-2.
On my own ,the other options are incorrect because:
* A. CnH2n This is the general formula for alkenes (which have a double bond) or cycloalkanes.
* B. CnH2n+2 This is the general formula for alkanes (which have only single bonds).
* D. CnH2n+1OH This formula suggests the presence of an alcohol group (-OH), which isn't a hydrocarbon. Tollen's reagent specifically reacts with alkynes, not alcohols.
In simple terms, think of it like this:
Tollen's reagent is like a special detective that only reacts with a specific type of molecule – terminal alkynes. And alkynes have a special formula: CnH2n-2.
The answer is C jor. 20% of chemistry answers on this platform is wrong. how can a Tollens reagent react with alkanols? its impossible
It is often said that Tollens' reagent does not react with alcohols. However, from personal experience, gentle heating of a primary alcohol with Tollens' will cause a small amount of oxidation and result in a fine black precipitate
Greetings, The Myschool Team.
The correct answer is C and not D. Tollen's reagent is used to test for the presence of a terminal triple bond, and does not react with alkanols. The general formula of alkynes is given as CnH2n-2, which is captured by C. Thus, option C is the correct answer. Thank you.
