All Courses
Explore Courses UPSC Exam UPSC Test Series Free Notes EduRev Infinity Get the App Login Join for Free
Sign in Open App
Class 12 Exam  >  Class 12 Questions  >  Assertion (A): Cu powder is used in Sandmeyer... Start Learning for Free
SaveJoin the Discussion on the App
Assertion (A): Cu powder is used in Sandmeyer's reaction. Reason (R): Diazonium group is replaced by chloride or bromide by Sandmeyer's reaction.?
Clear all your Class 12 doubts with EduRev
Most Upvoted Answer
Assertion (A): Cu powder is used in Sandmeyer's reaction. Reason (R): ...
Assertion (A): Cu powder is used in Sandmeyer's reaction.
The Sandmeyer reaction is a well-known method for the synthesis of aryl halides from aryl diazonium salts. In this reaction, copper powder plays a crucial role as a catalyst.
- Function of Cu Powder:
- Acts as a reducing agent.
- Facilitates the substitution of the diazonium group with halides (Cl or Br).
- Enhances the reaction efficiency.
Reason (R): Diazonium group is replaced by chloride or bromide by Sandmeyer's reaction.
The Sandmeyer reaction is specifically designed to replace the diazonium group with halides, producing aryl halides.
- Mechanism Overview:
- A diazonium salt is treated with CuX (where X is Cl or Br).
- The diazonium group (–N2+) is displaced.
- The substitution results in the formation of aryl halides.
- Key Products:
- When reacted with CuCl, the product is aryl chloride.
- When reacted with CuBr, the product is aryl bromide.
Conclusion
Both the assertion and reason are correct and interconnected. The use of Cu powder is essential for the successful execution of the Sandmeyer reaction, leading to the replacement of the diazonium group with halides, thus forming aryl halides efficiently. This reaction is significant in organic synthesis for developing various aromatic compounds.
Explore Courses for Class 12 exam

Similar Class 12 Doubts

Read the passage given below and answer the following questions:The rate of a reaction, which may also be called its velocity or speed, can be defined with relation to the concentration of any of the reacting substances, or to that of any product of the reaction. If the species chosen is a reactant which has a concentration c at time t the rate is - dc/dt, while the rate with reference to a product having a concentration x at time t is dx/dt. Any concentration units may be used for expressing the rate; thus, if moles per liter are employed for concentration and seconds for the time, the units for the rate are moles litre–1sec–1. For gas reactions pressure units are sometimes used in place of concentrations, so that legitimate units for the rate would be (mm. Hg) sec–1 and atm. sec–1 The order of a reaction concerns the dependence of the rate upon the concentrations of reacting substances; thus, if the rate is found experimentally to be proportional to the ath power of the concentration of one of the reactants A, to the both power of the concentration of a second reactant B, and so forth, via., rate = k CAα CAβ the over-all order of the reaction is simply n = α + β + ----- (2) Such a reaction is said to be of the αth order with respect to the substance A, the βth order with respect to B.In the following questions, a statement of Assertion followed by a statement of Reason is given. Choose the correct answer out of the following choices on the basis of the above passage.Assertion: Reactions can occur at different speeds.Reason: Rate of reaction is also called speed of reaction.

Read the passage given below and answer the following questions:The rate of a reaction, which may also be called its velocity or speed, can be defined with relation to the concentration of any of the reacting substances, or to that of any product of the reaction. If the species chosen is a reactant which has a concentration c at time t the rate is - dc/dt, while the rate with reference to a product having a concentration x at time t is dx/dt. Any concentration units may be used for expressing the rate; thus, if moles per liter are employed for concentration and seconds for the time, the units for the rate are moles litre–1sec–1. For gas reactions pressure units are sometimes used in place of concentrations, so that legitimate units for the rate would be (mm. Hg) sec–1 and atm. sec–1 The order of a reaction concerns the dependence of the rate upon the concentrations of reacting substances; thus, if the rate is found experimentally to be proportional to the ath power of the concentration of one of the reactants A, to the both power of the concentration of a second reactant B, and so forth, via., rate = k CAα CAβ the over-all order of the reaction is simply n = α + β + ----- (2) Such a reaction is said to be of the αth order with respect to the substance A, the βth order with respect to B.In the following questions, a statement of Assertion followed by a statement of Reason is given. Choose the correct answer out of the following choices on the basis of the above passage.Assertion: For a reaction: P + 2Q → Products, Rate = k [P]1/2[Q]1 so the order of reaction is 1.5Reason: Order of reaction is the sum of stoichiometric coefficients of the reactants.

Assertion (A): Cu powder is used in Sandmeyer's reaction. Reason (R): Diazonium group is replaced by chloride or bromide by Sandmeyer's reaction.?
Question Description
Assertion (A): Cu powder is used in Sandmeyer's reaction. Reason (R): Diazonium group is replaced by chloride or bromide by Sandmeyer's reaction.? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Assertion (A): Cu powder is used in Sandmeyer's reaction. Reason (R): Diazonium group is replaced by chloride or bromide by Sandmeyer's reaction.? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion (A): Cu powder is used in Sandmeyer's reaction. Reason (R): Diazonium group is replaced by chloride or bromide by Sandmeyer's reaction.?.
Solutions for Assertion (A): Cu powder is used in Sandmeyer's reaction. Reason (R): Diazonium group is replaced by chloride or bromide by Sandmeyer's reaction.? in English & in Hindi are available as part of our courses for Class 12. Download more important topics, notes, lectures and mock test series for Class 12 Exam by signing up for free.
Here you can find the meaning of Assertion (A): Cu powder is used in Sandmeyer's reaction. Reason (R): Diazonium group is replaced by chloride or bromide by Sandmeyer's reaction.? defined & explained in the simplest way possible. Besides giving the explanation of Assertion (A): Cu powder is used in Sandmeyer's reaction. Reason (R): Diazonium group is replaced by chloride or bromide by Sandmeyer's reaction.?, a detailed solution for Assertion (A): Cu powder is used in Sandmeyer's reaction. Reason (R): Diazonium group is replaced by chloride or bromide by Sandmeyer's reaction.? has been provided alongside types of Assertion (A): Cu powder is used in Sandmeyer's reaction. Reason (R): Diazonium group is replaced by chloride or bromide by Sandmeyer's reaction.? theory, EduRev gives you an ample number of questions to practice Assertion (A): Cu powder is used in Sandmeyer's reaction. Reason (R): Diazonium group is replaced by chloride or bromide by Sandmeyer's reaction.? tests, examples and also practice Class 12 tests.
Explore Courses for Class 12 exam
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Get App
© EduRev
Education Revolution
Signup to see your scores go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup