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1 mole glucose is added to 1 L of water ...

1 mole glucose is added to 1 L of water `K_(b)(H_(2)O)=0.512" K kg mole"^(-1)` boiling point of solution will be

A

`373.512 K`

B

`100.512K`

C

`99.488K`

D

`372.488K`

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Properties such as boiling point, freezing point and vapour, pressure of a pure solvent change Propeties such as boiling point, freezing point and vapour, pressure of a pure solvent change when solute molecules are added to get homogeneous solution. These are called colligative properties. Applications of colligative properties are very useful in day-to-day life. One of its examples is the use of ethylene glycol and water mixture as anti-freezing liquid in the radiator of automobiles. A solution M is prepared by mixing athanol and water. The mole fraction of ethanol in the mixture is 0.9 Given Freezing point depression constant of water (K_(f)^("water"))=1.86 K kg "mol"^(-1) Freezing point depression constant of ethanol (K_(f)^("ethanol"))=2.0 K kg "mol"^(-1) Boiling point elevation constant of water (K_(b)^("water"))=0.52 kg "mol"^(-1) Boiling point elevation constant of ethanol (K_(b)^("ethanol"))=1.2 kg "mol"^(-1) Standard freezing point of water =273 K Standard freezing point of ethanol = 155.7 K Standard boiling point of water =373 K tandard boiling point of ethanol =351.5 K Vapour pressure of pure water =32.8 mmHg Vapour presure of pure ethanol =40g Hg Molecular weight of water =18 g"mol"^(-1) Molecules weight of ethanol =46 g "mol"^(-1) In answering the following questions, consider the solutions to be ideal dilute solutions and solutes to be non-volatile and non-dissociative. when solute molecules are added to get homogeneous solution. These are called colligative properties. Applications of colligative properties are very useful in day-to-day life. One of its examples is the use of ethylene glycol and water mixture as anti-freezing liquid in the radiator of automobiles. A solution M is prepared by mixing athanol and water. The mole fraction of ethanol in the mixture is 0.9 The freezing point of the solution M is

An aqueous solution of NaCI freezes at -0.186^(@)C . Given that K_(b(H_(2)O)) = 0.512K kg mol^(-1) and K_(f(H_(2)O)) = 1.86K kg mol^(-1) , the elevation in boiling point of this solution is:

When 1 mole of a solute is dissolved in 1 kg of H_(2)O , boiling point of solution was found to be 100.5^(@) C. K_(b) for H_(2)O is :

Pure water boils at 99.725^(@)C at Shimla. If K_(b) for water is 0.51 K mol^(-1) kg the boiling point of 0.69 molal urea solution will be:

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At certain Hill-station pure water boils at 99.725^(@)C . If K_(b) for water is 0.513^(@)C kg mol^(-1) , the boiling point of 0.69m solution of urea will be:

At certain Hill-station pure water boils at 99.725^(@)C . If K_(b) for water is 0.513^(@)C kg mol^(-1) , the boiling point of 0.69m solution of urea will be:

At certain Hill-station pure water boils at 99.725^(@)C . If K_(b) for water is 0.513^(@)C kg mol^(-1) , the boiling point of 0.69m solution of urea will be:

The elevation in boiling point, when 13.44 g of freshly prepared CuCI_(2) are added to one kilogram of water, is [Some useful data, K_(b) (H_(2)O) = 0.52 kg K mol^(-1), "mol.wt of" CuCI_(2) = 134.4 gm]

AAKASH INSTITUTE ENGLISH-SOLUTIONS-ASSIGMENT (SECTION-A)
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