Question

a 20cm long tube containing 15% sugar solution rotates the plane of polarization of light by 21 degree.the specific rotation of sugar solution is

Answer 1

The formula of specific rotation is given by:

Specific rotation = alpha / C(g/ml) *L(dm)

Length of the tube = 20cm = 2 dm

Concentration (g/ml) of sugar solution = 15% = 15g sugar per 100 ml water

= 15g/100ml = 0.15 g /ml

Plane polarized light is rotated by 21 degree

Specific rotation = 21/ (2*0.15)

= 21/ 0.3 = 70 degree

Hence, specific rotation of sugar solution is 70 degree

Answer 2

Answer:

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Explanation:

POLARIZATION OF LIGHT OBJECT: To find the specific rotation of cane- sugar. ... They found that solutions of sugar and certain other naturally occurring ... Fig.1 (a): When the sample tube is empty, the planes of polarization of the ... Optically active organic molecules have a spiral structure like a right-handed