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Introduction to d and f Block Elements

nt2.56g sulph...

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nt2.56g sulphur in 100g CS2 has depression in freezing point of 0.010, Kf=0.1. hence atomicity of sulphur in the solution isn

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2.56 g

100 g

C S_{2}

has depression in freezing point of

{0.010}^{\circ} C

. Atomicity of sulphur is

C S_{2}

K_{f} = {0.1}^{\circ} m o l a l^{- 1})

Q. 2.56 gm of sulphur in 100 gm of CS

_{2}

has depression in F.P. of 0.010

^{o}

_{f} =

^{o}

^{- 1}

. Calculate atomicity of sulphur in CS

_{2}

:

Q. 25.6 g of sulphur in 100 g benzene shows depression in freezing point of

{5.12}^{o} C

K_{f}

{5.12}^{o} C k g m o l^{- 1}

. The molecular formula of sulphur in benzene is:

48^{o} C

, the vapour pressure of pure

C S_{2}

850 torr

. A solution of

2.0 g

100 g

C S_{2}

has a vapour pressure

844.9 torr

. Determine the atomicity of sulphur molecule.

Q. The boiling point of a solution of 5 g sulphur in 100 g

C S_{2}

{0.5}^{o} C

above pure solvent. If the

K_{b}

C S_{2}

is 2.56 K/m, then find the atomicity of the sulphur in the solvent.

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