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Standard XII
Chemistry
Relative Lowering of Vapour Pressure
The amount of...
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The amount of kcl in grams added to 1kg of water to lower it's freezing point to -8.0'c is (kf of water = 1.86)
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Q.
Calculate the amount of
K
C
l
which must be added to
1
kg of water so that the freezing point is depressed by
2
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K
f
of water
=
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−
1
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Q.
What mass of ethylene glycol (Molar mass
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Q.
How many grams of methyl alcohol should be added to
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Q.
Calculate the amount of
C
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(molar mass = 111g/mol) which must be added to 580g of water so that freezing point lower by 2K, assuming
C
a
C
l
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is completely dissociated:
[
K
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Q.
Calculate the amount of
C
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l
2
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o
l
−
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)
which must be added to 500 g of water to lower its freezing point by 2K, assuming
C
a
C
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f
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