default_background
✕

Find the best tutors and institutes for Class 12 Tuition

Find Best Class 12 Tuition

Please select a Category.

Please select a Locality.

No matching category found.

No matching Locality found.

Q8.5(iii):
Draw structures of the following derivative. (iii) Acetaldehydedimethylacetal

Solution :

Step 1: Chemical Nomenclature and Structural Analysis

The compound Acetaldehyde dimethyl acetal is derived from the reaction of acetaldehyde ($CH_3CHO$) with two equivalents of methanol ($CH_3OH$) in the presence of an acid catalyst [Per the mechanism of nucleophilic addition to carbonyl compounds].

  • Parent Carbonyl: Acetaldehyde ($CH_3-CHO$)
  • Nucleophile: Methanol ($CH_3OH$)
  • Reaction Type: Acetal formation via hemiacetal intermediate.
  • Structural Transformation: The carbonyl oxygen of the aldehyde is replaced by two alkoxy groups ($-OCH_3$) bonded to the same carbon atom (geminal diether).

Step 2: Derivation of the Molecular Formula

The chemical reaction is represented as follows:

$CH_3CHO + 2CH_3OH \xrightarrow{H^+} CH_3CH(OCH_3)_2 + H_2O$

In the product, the carbonyl carbon is now bonded to:

  • A hydrogen atom ($H$)
  • A methyl group ($CH_3$)
  • Two methoxy groups ($-OCH_3$)
This results in the condensed formula: $CH_3CH(OCH_3)_2$.

Step 3: Geometric Representation (SVG)

C CH₃ H O—CH₃ O—CH₃

Step 4: Structural Breakdown

Component Description
Central Carbon (C-2) $sp^3$ hybridized, tetrahedral geometry.
Functional Group Acetal (1,1-dialkoxyalkane).
IUPAC Name 1,1-Dimethoxyethane.

Final Solution: The structure of Acetaldehyde dimethyl acetal (1,1-Dimethoxyethane) is $CH_3-CH(OCH_3)_2$.


More Questions from Class 12 Chemistry Aldehydes Exercises


CBSE Solutions for Class 12 Chemistry Aldehydes


Chapters in CBSE - Class 12 Chemistry


Top Tutors who teach Aldehydes

Ajay S jadon Class 12 Tuition trainer in Kota
(82)
superTutorSuper Tutor
locationImg Talwandi Sector-B, Kota
experience 10 yrs of Exp students 15 students
greenClock 891 hrs of classes completed
rsIcon 1850 per hour
Author of DOOR TO IIT
Online Classes Online Classes
homeTutions Student's Home
regularClasses Tutor's home

My teaching exp.11 year in most reputed coaching in india. Mentor of jee top rank air-12 yatis agrawal, 19, 28 many more in top 100 in jee adavnced. Many of students got 100%tile in jee mains along with 100% marks in board exams. I also provide complete relevent study material like worksheet, practice sheet , dpps , assignment etc. Daily quizz based on assignment. Periodically test papers topic wise, minor and major as per shedule. I have helped thousands of students overcome their fear of maths.

Ayush Tripathy

Great Teaching Expertise High standard. Experienced Teacher with excellent knowledge. Thank you for reaching my son.

Skills: Mathematics , Physics and more

(6)
Top Tutor
locationImg Bajaj Nagar, Nagpur
experience 3 yrs of Exp
Tutor
Online Classes Online Classes
homeTutions Student's Home

Only the students attitude makes a subject HARD or EASY. FUNDAMENTALS are the only need for all Competitive Exams. Once you GET it, cant be bothered again.

Skills: English , Mathematics and more
Also teaches: Class 8 Tuition, Class 6 Tuition and more

Manjunath  Class 12 Tuition trainer in Bangalore
(101)
superTutorSuper Tutor
locationImg Jayanagar East, Bangalore
experience 4 yrs of Exp students 67 students
greenClock 5854 hrs of classes completed
rsIcon 250 per hour
PhD Organic Chemistry at IIT Madras - One to One Tuition and Group Tuition
Online Classes Online Classes
regularClasses Tutor's home

I take classes for grade 12 of Karnataka State PUC, CBSE, ISC, NIOS and Cambridge or IGCSE A Levels. I have 4 years of teaching experience.

Anuradha

My son has been taking tuitions with Manjunath Sir for over one plus year now and he has been very knowledgeable, dedicated and supportive to inculcate and prepare my child to secure first class top score in chemistry ISC board. Sincerely appreciate his commitment towards my child to go beyond and above curriculum to clarify his doubts and building faith in him to get interest in the Chemistry subject and now secure top scores. Thank you Sir!! You are the best!!

Skills: Chemistry
Also teaches: Class 10 Tuition, CET Coaching and more

(26)
Top Tutor
locationImg Madambakkam, Chennai
experience 15 yrs of Exp students 17 students
greenClock 205 hrs of classes completed
rsIcon 500 per hour
Exclusive CBSE and NEET TRAINER
Online Classes Online Classes

Good experience to conduct classes with some working model .. have one YouTube channel for class 12 CBSE Chemistry students.. I have 15 years of experience in handling the grade 12 students, and I can be a good mentor for your ward.. I will follow ncert book for class 12 grade and it is more than enough for competitive exams...

Hema

Your teaching was so crystal clear. You made me understand the depth of the concepts so easily. I got a very good foundation in the concepts by your teaching Sir. You made me overcome even the smallest difficulties I faced during problem solving. The naming charts and road maps which you asked us to make for the organic chemistry made me easily solve the conversion type questions Sir. I had a very great exposure to all the concepts and questions in the subject. Thank you so much for your personalised attention which created a great love for the subject Sir.

Skills: Chemistry

(18)
Top Tutor
locationImg Sector 13, Dwarka, Delhi
experience 10 yrs of Exp students 1 student
greenClock 165 hrs of classes completed
rsIcon 500 per hour
7-12 Class, CBSE and ICSE Boards, Total Experience of 4 years, MBA & B.Sc. in Management
Online Classes Online Classes
regularClasses Tutor's home

I am an entrepreneur, giving online classes for past couple of years. I am certified in advanced Excel and completed my MBA in 2012. I always think of learning is the best done by observing, listening and practicing what was learnt.

Skills: English , Biology and more
Also teaches: Class 8 Tuition, Drawing and more

Other Subjects in CBSE - Class 12

Worksheet Icon

Download free CBSE - Class 12 Chemistry Aldehydes Exercises worksheets

Download Now

Find Best Class 12 Tuition ?

Find Now »