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Ionic Radii and Ionisation Enthalpy (Group 2)

X moles of KC...

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X moles of KCl and y moles of BaCl2 are both dissloved in 1kg of water is 1.85 K/ molal what is the observed range of change in freezing temperature if the ratio of x to y is

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Q. 0.534 g of solute is dissolved in 15 g of water then freezing point temperature changes from

0^{o} C

- {1.57}^{o} C

. Molal depression constant of water,

K_{f} = 1.85 K k g m o l^{- 1}

. Find out:
(i) Molal concentration
(ii) Molecular mass of solute

0.01 N

K C l

B a C l_{2}

are prepared in water. The freezing point of

K C l

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. What is the freezing point of

B a C l_{2}

solution assuming both

K C l

B a C l_{2}

to be completely ionized?

0.01 M

K C l

B a C l_{2}

are prepared in water. The freezing point of

K C l

- 2^{\circ} C

. What is the freezing point of

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to be completely ionised?

Q. Molal depression of freezing point of water is

{1.86}^{0} C

per 1000 g of water. 0.02 mole of urea dissolved in 100 g of water will produce a lowering of the freezing temperature by :

Q. What will be the depression in freezing point of a

0.5 m

K C l

solution? The molal freezing point constant of water is

{1.86}^{o} C m^{- 1}

.

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