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An aqueous solution of an optically pure compound of concentration 100 mg in 1 ml of water and measured in a quartz tube of 5 cm length was found to be –3°. The magnitude of specific rotation is:
Correct answer is '60'. Can you explain this answer?
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An aqueous solution of an optically pure compound of concentration 100...
Optically active with a specific rotation of +10°. This means that the compound is capable of rotating the plane of polarized light to the right (clockwise) by 10 degrees.
The specific rotation of a compound is a property that depends on the nature of the compound and the wavelength of the light used. It is given by the formula:
\[ \alpha = \frac{\alpha_{obs}}{c l}\]
where α is the specific rotation, αobs is the observed rotation in degrees, c is the concentration in g/ml, and l is the path length in dm.
In this case, we have c = 0.1 g/ml (since 100 mg in 1 ml is equivalent to 0.1 g/ml) and l = 0.05 dm (since the quartz tube has a length of 5 cm or 0.05 dm).
Substituting these values into the formula, we get:
\[ \alpha = \frac{10}{0.1 \times 0.05}\]
\[ \alpha = 200 \text{ degrees/cm/g}\]
Therefore, the specific rotation of this compound is +200 degrees/cm/g.
The specific rotation of a compound is a property that depends on the nature of the compound and the wavelength of the light used. It is given by the formula:
\[ \alpha = \frac{\alpha_{obs}}{c l}\]
where α is the specific rotation, αobs is the observed rotation in degrees, c is the concentration in g/ml, and l is the path length in dm.
In this case, we have c = 0.1 g/ml (since 100 mg in 1 ml is equivalent to 0.1 g/ml) and l = 0.05 dm (since the quartz tube has a length of 5 cm or 0.05 dm).
Substituting these values into the formula, we get:
\[ \alpha = \frac{10}{0.1 \times 0.05}\]
\[ \alpha = 200 \text{ degrees/cm/g}\]
Therefore, the specific rotation of this compound is +200 degrees/cm/g.
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An aqueous solution of an optically pure compound of concentration 100 mg in 1 ml of water and measured in a quartz tube of 5 cm length was found to be –3°. The magnitude of specific rotation is:Correct answer is '60'. Can you explain this answer?
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An aqueous solution of an optically pure compound of concentration 100 mg in 1 ml of water and measured in a quartz tube of 5 cm length was found to be –3°. The magnitude of specific rotation is:Correct answer is '60'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about An aqueous solution of an optically pure compound of concentration 100 mg in 1 ml of water and measured in a quartz tube of 5 cm length was found to be –3°. The magnitude of specific rotation is:Correct answer is '60'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for An aqueous solution of an optically pure compound of concentration 100 mg in 1 ml of water and measured in a quartz tube of 5 cm length was found to be –3°. The magnitude of specific rotation is:Correct answer is '60'. Can you explain this answer?.
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