Mixture Of Ph CHO And HCHOis Treated With NaOH Then Class 12 ...

CoursesCourses for KidsFree study materialOffline CentresMoreStore

Talk to our experts

1800-120-456-456

Sign In

• Question Answer

• Class 12

• Chemistry

• Mixture of Ph CHO and HCHOis t...

AnswerQuestion Answers for Class 12Class 12 BiologyClass 12 ChemistryClass 12 EnglishClass 12 MathsClass 12 PhysicsClass 12 Social ScienceClass 12 Business StudiesClass 12 EconomicsQuestion Answers for Class 11Class 11 EconomicsClass 11 Computer ScienceClass 11 BiologyClass 11 ChemistryClass 11 EnglishClass 11 MathsClass 11 PhysicsClass 11 Social ScienceClass 11 AccountancyClass 11 Business StudiesQuestion Answers for Class 10Class 10 ScienceClass 10 EnglishClass 10 MathsClass 10 Social ScienceClass 10 General KnowledgeQuestion Answers for Class 9Class 9 General KnowledgeClass 9 ScienceClass 9 EnglishClass 9 MathsClass 9 Social ScienceQuestion Answers for Class 8Class 8 ScienceClass 8 EnglishClass 8 MathsClass 8 Social ScienceQuestion Answers for Class 7Class 7 ScienceClass 7 EnglishClass 7 MathsClass 7 Social ScienceQuestion Answers for Class 6Class 6 ScienceClass 6 EnglishClass 6 MathsClass 6 Social ScienceQuestion Answers for Class 5Class 5 ScienceClass 5 EnglishClass 5 MathsClass 5 Social ScienceQuestion Answers for Class 4Class 4 ScienceClass 4 EnglishClass 4 MathsMixture of $Ph - CHO$ and $HCHO$is treated with $NaOH$ then Cannizzaro reaction involves :(A) Oxidation of $HCHO$(B) Reduction of $HCHO$(C) Oxidation of $Ph - CHO$(D) Reduction of $Ph - CHO$AnswerVerified548.4k+ viewsHint: Some examples of Cannizzaro reaction are formaldehyde, benzaldehyde, etc. There are two types of Cannizzaro reactions, self Cannizzaro and cross Cannizzaro. Self Cannizzaro reaction is the reaction involving condensation of the same aldehyde molecule. And the cross Cannizzaro reaction is the one involving two different aldehydes.Complete step by step answer:When two molecules of aldehydes not containing $\alpha $hydrogen are reacted with 50 $\% $ alkalies undergo oxidation-reduction disproportionate to give corresponding alcohols and salts of carboxylic acid. This reaction is called Cannizzaro's reaction.The reaction between benzaldehyde and formaldehyde is an example of cross Cannizzaro reaction and is given as Here, benzaldehyde gets reduced to benzyl alcohol by gaining two hydrogen atoms and formaldehyde is oxidized to sodium formate by gaining two oxygen atoms. So, this is an example of a redox reaction.In a redox reaction, one of the reactants is oxidized and the other is reduced simultaneously. Oxidation is defined as the gain of oxygen atoms or loss of hydrogen atoms with an increase in oxidation number.The reduction is defined as the loss of oxygen atoms or gain of hydrogen atoms with a decrease in oxidation number.So, $Ph - CHO$is undergoing reduction, and $HCHO$ is undergoing oxidation.So, the correct answer is option A,D.Note: In cross Cannizzaro, the smaller aldehyde undergoes oxidation and the bigger aldehyde, reduction.And also, for carrying out the Cannizzaro reaction, the condition of 50 $\% $ NaOH and absence of $\alpha $ hydrogen is necessary. $\alpha $ Hydrogen is defined as the hydrogen atom attached to a carbon atom i.e. the carbon atom next to the functional group.Recently Updated PagesMaster Class 12 Business Studies: Engaging Questions & Answers for SuccessMaster Class 12 Economics: Engaging Questions & Answers for SuccessMaster Class 12 English: Engaging Questions & Answers for SuccessMaster Class 12 Maths: Engaging Questions & Answers for SuccessMaster Class 12 Social Science: Engaging Questions & Answers for SuccessMaster Class 12 Chemistry: Engaging Questions & Answers for SuccessMaster Class 12 Business Studies: Engaging Questions & Answers for SuccessMaster Class 12 Economics: Engaging Questions & Answers for SuccessMaster Class 12 English: Engaging Questions & Answers for SuccessMaster Class 12 Maths: Engaging Questions & Answers for SuccessMaster Class 12 Social Science: Engaging Questions & Answers for SuccessMaster Class 12 Chemistry: Engaging Questions & Answers for Success

• 1
• 2

Trending doubtsWhat are the major means of transport Explain each class 12 social science CBSEWhich are the Top 10 Largest Countries of the World?Draw a labelled sketch of the human eye class 12 physics CBSEHow much time does it take to bleed after eating p class 12 biology CBSEExplain sex determination in humans with line diag class 12 biology CBSEDifferentiate between homogeneous and heterogeneous class 12 chemistry CBSEWhat are the major means of transport Explain each class 12 social science CBSEWhich are the Top 10 Largest Countries of the World?Draw a labelled sketch of the human eye class 12 physics CBSEHow much time does it take to bleed after eating p class 12 biology CBSEExplain sex determination in humans with line diag class 12 biology CBSEDifferentiate between homogeneous and heterogeneous class 12 chemistry CBSE

• 1
• 2

Repeaters Course for NEET 2022 - 23

NEET Repeater 2023 - Aakrosh 1 Year Course