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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.?
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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.
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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.?
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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.?.
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