Define specific rotation.

(+) tartaric acid has a specific rotation of +12 unit when measured in 12cm polarimeter tube and 2g/ml concentration at given temperature and light. When it is diluted to half the concentration, length of tube and other parameters being same, then the specific rotation will be:

Name the instrument used for measuring specific rotation.

Magnitude of specific rotation of a compound is independent of :

Let (+) tartaric acid has a specific rotation of +11.1 , Calculate the specific rotation of a mixture of 68%(+) tartaric acid and 32%(-) tartaric acid.

underset("Specific rotation" = +50^(@))(Ph-CH(OH)CH_(3)) overset(SOCl_(2))(rarr) underset(Cl)underset(|)(PhCH) - CH_(3) What si the specific rotation of the product?

The enantiomeric excess and observed rotation of a mixture containing 6 gm of (+)-2-butanol and 4 gm of (-)-2-butanol are respectively (if the specific rotation of enantiomerically pure (+)-2-butanol is +13.5 unit).

The observed rotation of 10ml of a solution containing 2g of a compound when placed in 25cm long polarimeter tube is + 13.4^@ . What is the specific rotation of the compound?

A 300 mm long tube containing 60 cm^(3) of sugar solution produces an optical rotations of 10^(@) when placed in a saccharimeter. If specific rotation of sugar is 60^(@) calculate the quantity of sugar constained in te tube solution.

A tube of sugar solution 20 cm long is placed between crossed nicols and illuminated with light of wavelength 6xx10^(-5) cm If the optical rotation produced is 13^(@) and the specific rotation is 65^(@) determine the strength of the solution

Cholesterol, when isolated from natural sources, is obtained as a single enantiomer. The observed rotation alpha of a 0.3 g sample of cholesterol in 5mL of chloroform solution contained in a 10 cm polarimeter tube is -0.78^(@) . Calculate the specific rotation of cholesterol. A sample of synthetic cholesterol was prepared consisting entirely of (+)-cholesterol. This synthetic (+)-cholesterol was mixed with some natural (-)-cholesterol. The mixture had a specific rotation [alpha]_(D)^(20) " of " -13^(@). What fraction of the mixture was (+)-cholesterol ?