NEET Exam > NEET Questions > Calculate the specific rotation of lactic aci...
Start Learning for Free
Calculate the specific rotation of lactic acid if a solution containing 0.75gm/10ml is placed 1 dm polarimeter tube and it's observed rotation at 25 tem.is 1.2.?
Most Upvoted Answer
Calculate the specific rotation of lactic acid if a solution containin...
Calculation of Specific Rotation of Lactic Acid
Given:
- Concentration of solution = 0.75 g/10 mL
- Length of polarimeter tube = 1 dm
- Observed rotation = 1.2
Formula:
Specific rotation (α) = observed rotation / (concentration * length of tube)
Calculation:
- Concentration of solution in g/mL = 0.75 g/10 mL = 0.075 g/mL
- Length of tube in dm = 1 dm
- Observed rotation = 1.2
Using the formula for specific rotation, we get:
Specific rotation (α) = 1.2 / (0.075 * 1) = 16
Therefore, the specific rotation of lactic acid is 16.
Explanation:
Lactic acid is an optically active compound, which means it rotates the plane of polarized light. The specific rotation of a compound is a measure of the magnitude of this rotation, and is defined as the observed rotation divided by the concentration of the solution and the length of the polarimeter tube.
In this case, we are given the concentration of the solution (0.75 g/10 mL) and the length of the tube (1 dm), as well as the observed rotation (1.2). Using the formula for specific rotation, we can calculate the specific rotation of lactic acid, which comes out to be 16.
This value indicates that lactic acid has a strong optical activity, and can be used as a chiral building block in the synthesis of many important compounds.
Given:
- Concentration of solution = 0.75 g/10 mL
- Length of polarimeter tube = 1 dm
- Observed rotation = 1.2
Formula:
Specific rotation (α) = observed rotation / (concentration * length of tube)
Calculation:
- Concentration of solution in g/mL = 0.75 g/10 mL = 0.075 g/mL
- Length of tube in dm = 1 dm
- Observed rotation = 1.2
Using the formula for specific rotation, we get:
Specific rotation (α) = 1.2 / (0.075 * 1) = 16
Therefore, the specific rotation of lactic acid is 16.
Explanation:
Lactic acid is an optically active compound, which means it rotates the plane of polarized light. The specific rotation of a compound is a measure of the magnitude of this rotation, and is defined as the observed rotation divided by the concentration of the solution and the length of the polarimeter tube.
In this case, we are given the concentration of the solution (0.75 g/10 mL) and the length of the tube (1 dm), as well as the observed rotation (1.2). Using the formula for specific rotation, we can calculate the specific rotation of lactic acid, which comes out to be 16.
This value indicates that lactic acid has a strong optical activity, and can be used as a chiral building block in the synthesis of many important compounds.
Attention NEET Students!
To make sure you are not studying endlessly, EduRev has designed NEET study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in NEET.
|
Explore Courses for NEET exam
|
|
Similar NEET Doubts
Top Courses for NEETView all
Calculate the specific rotation of lactic acid if a solution containing 0.75gm/10ml is placed 1 dm polarimeter tube and it's observed rotation at 25 tem.is 1.2.?
Question Description
Calculate the specific rotation of lactic acid if a solution containing 0.75gm/10ml is placed 1 dm polarimeter tube and it's observed rotation at 25 tem.is 1.2.? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Calculate the specific rotation of lactic acid if a solution containing 0.75gm/10ml is placed 1 dm polarimeter tube and it's observed rotation at 25 tem.is 1.2.? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Calculate the specific rotation of lactic acid if a solution containing 0.75gm/10ml is placed 1 dm polarimeter tube and it's observed rotation at 25 tem.is 1.2.?.
Calculate the specific rotation of lactic acid if a solution containing 0.75gm/10ml is placed 1 dm polarimeter tube and it's observed rotation at 25 tem.is 1.2.? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Calculate the specific rotation of lactic acid if a solution containing 0.75gm/10ml is placed 1 dm polarimeter tube and it's observed rotation at 25 tem.is 1.2.? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Calculate the specific rotation of lactic acid if a solution containing 0.75gm/10ml is placed 1 dm polarimeter tube and it's observed rotation at 25 tem.is 1.2.?.
Solutions for Calculate the specific rotation of lactic acid if a solution containing 0.75gm/10ml is placed 1 dm polarimeter tube and it's observed rotation at 25 tem.is 1.2.? in English & in Hindi are available as part of our courses for NEET.
Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free.
Here you can find the meaning of Calculate the specific rotation of lactic acid if a solution containing 0.75gm/10ml is placed 1 dm polarimeter tube and it's observed rotation at 25 tem.is 1.2.? defined & explained in the simplest way possible. Besides giving the explanation of
Calculate the specific rotation of lactic acid if a solution containing 0.75gm/10ml is placed 1 dm polarimeter tube and it's observed rotation at 25 tem.is 1.2.?, a detailed solution for Calculate the specific rotation of lactic acid if a solution containing 0.75gm/10ml is placed 1 dm polarimeter tube and it's observed rotation at 25 tem.is 1.2.? has been provided alongside types of Calculate the specific rotation of lactic acid if a solution containing 0.75gm/10ml is placed 1 dm polarimeter tube and it's observed rotation at 25 tem.is 1.2.? theory, EduRev gives you an
ample number of questions to practice Calculate the specific rotation of lactic acid if a solution containing 0.75gm/10ml is placed 1 dm polarimeter tube and it's observed rotation at 25 tem.is 1.2.? tests, examples and also practice NEET tests.
|
|
Explore Courses for NEET exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup