Answer
Verified
433.2k+ views
Hint: Cannizzaro reaction is a disproportionation reaction that means the reaction involves the self oxidation and reduction reaction. As a result of the reaction, one molecule of the reactant was reduced to alcohol and the other oxidized to the carboxylic acid.
Complete step by step answer:
As we know that the aldehyde which does not contain α hydrogen undergoes the Cannizzaro reaction. If we talk about option A i.e. formaldehyde or methanal, there is no $\alpha$ hydrogen thus it undergoes the Cannizzaro reaction.
If we talk about the in option B, there is a presence of α hydrogen thus it does not undergo a Cannizzaro reaction.
If we talk about option C, there is also no α hydrogen thus it undergoes the Cannizzaro reaction.
So, the correct answer is Option A,C .
Additional information:
If two different aldehydes are present as a reactant then the reaction carried out is known as the cross Cannizzaro reaction. If one of the reactants is formaldehyde then the cross Cannizzaro reaction is of a great synthetic utility and it gives sodium formate and alcohol corresponding to the other aldehyde.
Note: It may be noted that the Cannizzaro reaction is the characteristic of aldehydes having no α hydrogen, but it is not confirmed to them. Certain aliphatic monoalkylated aldehydes undergo disproportionation reactions when heated with aq. NaOH. This exceptional behavior is probably due to the +I effect of two alkyl groups. In this aldehydes prefer to undergo a nucleophilic attack by $O{H^ - }$ ion at the aldehyde group giving intermediate which acts as a hydride donor to the second molecule of aldehyde to give disproportionation reaction.
Complete step by step answer:
As we know that the aldehyde which does not contain α hydrogen undergoes the Cannizzaro reaction. If we talk about option A i.e. formaldehyde or methanal, there is no $\alpha$ hydrogen thus it undergoes the Cannizzaro reaction.
If we talk about the in option B, there is a presence of α hydrogen thus it does not undergo a Cannizzaro reaction.
If we talk about option C, there is also no α hydrogen thus it undergoes the Cannizzaro reaction.
So, the correct answer is Option A,C .
Additional information:
If two different aldehydes are present as a reactant then the reaction carried out is known as the cross Cannizzaro reaction. If one of the reactants is formaldehyde then the cross Cannizzaro reaction is of a great synthetic utility and it gives sodium formate and alcohol corresponding to the other aldehyde.
Note: It may be noted that the Cannizzaro reaction is the characteristic of aldehydes having no α hydrogen, but it is not confirmed to them. Certain aliphatic monoalkylated aldehydes undergo disproportionation reactions when heated with aq. NaOH. This exceptional behavior is probably due to the +I effect of two alkyl groups. In this aldehydes prefer to undergo a nucleophilic attack by $O{H^ - }$ ion at the aldehyde group giving intermediate which acts as a hydride donor to the second molecule of aldehyde to give disproportionation reaction.
Recently Updated Pages
what is the correct chronological order of the following class 10 social science CBSE
Which of the following was not the actual cause for class 10 social science CBSE
Which of the following statements is not correct A class 10 social science CBSE
Which of the following leaders was not present in the class 10 social science CBSE
Garampani Sanctuary is located at A Diphu Assam B Gangtok class 10 social science CBSE
Which one of the following places is not covered by class 10 social science CBSE
Trending doubts
Derive an expression for drift velocity of free electrons class 12 physics CBSE
Which are the Top 10 Largest Countries of the World?
Write down 5 differences between Ntype and Ptype s class 11 physics CBSE
The energy of a charged conductor is given by the expression class 12 physics CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Derive an expression for electric field intensity due class 12 physics CBSE
How do you graph the function fx 4x class 9 maths CBSE
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
Derive an expression for electric potential at point class 12 physics CBSE