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On putting a polarimeter tube 25cm long ...

On putting a polarimeter tube 25cm long comtaining sugar solution of unknown strength, the plane of polarisation gets rotated through `10^(@)`. Find the strength of sugar solution I n`g cm^(-3)` specific rotation of sugar is `60%(@) //"decimeter"//"unit concenteration"`.

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Calculate the specific rotation if the plane of polarization is turned through 13.2^(@) traversing a length of 20 cm of 10% sugar solution.

A 22cm long tube containing 88cc of sugar produces an optical rotation of 9.9^(@) when placed in a polarimeter. If the amount of sugar in the solution is 6g, calculation the specific rotation.

Knowledge Check

  • 80 gm of impure sugar when dissolved in a litre of water gives an optical rotation of 9.9^(@) when placed in a tube of length 20 cm. If concentration of sugar solution is 75 gm/litre then specific rotation of sugar is :

    A
    `44^(@)`
    B
    `55^(@)`
    C
    `66^(@)`
    D
    `73^(@)`

  • 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

    A
    `0.1g//cc`
    B
    `0.2g//cc`
    C
    `0.9g//cc`
    D
    `1.0g//cc`

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    Calculate the specific rotation of sugar solution from the following data: length of the polaimeter tueb=0.21 concentration of sugar solution = 80kgm^(-3) angle of rotation = 10^(@)

    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 200 mm long tube containing 48 cm^(3) of sugar solution produces an optical rotation of 11^(@) when placed in a suucharimeter. If the specific rotation of sugar is 66^(@) calculate the quantity of sugar contained in the solution of the tube.

    A 0.12kg of impure sugar is dissolved in water and solution is mad eupto 8xx10^(-4)m^(3) . A length of 20cm of this solution causes a rotation of 15^(@) . If the specific rotation of sugar is 60xx10^(@) deg//decimetre kg m^(-3) , what is the purity of sugar?

    Calculate the amount of sugar dissolved in 10^(-3)m^(3) of water so as to produce ratation of plane of polarisation of 12^(@) . Given the specific rotation of sugar solution is 0.01 rad m^(-1) kg^(-1) m^(3) and length of polarimeter tube is 0.21m

    A solution of camphor in alcohol in a tube 20cm long is found to effect a rotation of the plane of viberation of light passing is of 33^(@) . What must be the indentify of camphor in g//cm^(2) in solution? The specific rotation of camphor is +54^(@) .

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