Calculate the amount of KCl which must be added in 100 g of water so that freezing point is depressed by 2 K

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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 2K.

(k_{f}

for water

= 1.86 K k g m o l^{- 1})

Q. Calculate the amount of sodium chloride which must be added to one kilogram of water so that the freezing point of water is depressed by 3 K. (Given,

K_{f}

=1.86 K kg

m o l^{- 1}

, atomic mass of Na=23, Cl=35.5).

Q. Calculate the amount of

C a C l_{2}

(molar mass = 111g/mol) which must be added to 580g of water so that freezing point lower by 2K, assuming

C a C l_{2}

is completely dissociated:

[

K_{f}

for water = 1.86 K kg/mol].

Q. Calculate the amount of

C a C l_{2}

(molar mass

= 111 g m o l^{- 1})

which must be added to 500 g of water to lower its freezing point by 2K, assuming

C a C l_{2}

is completely dissociated.

(K_{f}

for water

= 1.86 K k g m o l^{- 1})

Calculate the amount of $C a C l_{2}$ (molar mass = 111 g $m o l^{- 1}$ ) which must be added to 500 g of water to lower its freezing point by 2 K, assuming $C a C l_{2}$ is completely dissociated. ( $K_{f}$ for water = 1.86 K kg $m o l^{- 1}$ )

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