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The molal elevation constant is the rati...

The molal elevation constant is the ratio of the elevation in boiling point to

A

Molarity

B

Molality

C

Mole fraction of solute

D

Mole fraction of solvent

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B
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Statement-I : Molal elevation constant depends on the nature of solvent. Because Statement-II: Molal elevation constant is the elevation in boiling point when 1 mole of the solute is dissolved in 1 kg of solvent.

A' gram of non-volatile, non-electrolyte (molar mass M) is dissolved in 200 ml of unknown solvent (density =1.25 gm//ml molal elevation constant is K_(b) ) .Elevation in boiling point of this solution can be given by

Which is having highest elevation in boiling point?

Y g of non-volatile organic substance of molecular mass M is dissolved in 250 g benzene. Molal elevation constant of benzene is K_(b) . Elevation in its boiling point is given by:s

Fill in the blanks choosing appropriate word/words from these given in the brackets : (increases, decreases, the highest, the lowest, elevation, directly depression, molality, mole fraction, gt 1, lt 1, DeltaV, DeltaS , number of solute particles, nature of solute particles, hypotonic, T, - 3.72^(@)C, -1.86^(@)C , zero, one, two, more than, less than, 1 kg, 1 mole, molal, same extent, solution, equivalent.) Molal elevation constant, K_(b) for a solvent is the elevation in its boiling point when .............. of a solute is dissolved in ............. of the solvent.

1g of a non-volatile non-electrolyte solute is dissolved in 100g of two different solvents A and B whose ebullioscopic constants are in the ratio of 1 : 5. The ratio of the elevation in their boiling points, (DeltaT_(b)(A))/(DeltaT_(b)(B)) is

The molal elevation constant of water = 0.52 K m^(-1) . The boiling point of 1.0 molal aqueous KCl solution (assuming complete dissociation of KCl ) should be

The molal elevation constant of water = 0.52 K m^(-1) . The boiling point of 1.0 molal aqueous KCl solution (assuming complete dissociation of KCl ) should be

Which solution will show maximum elevation in boiling point?

For a dilute solution containing a nonvolatile solute, the molar mass of solute evaluated from the elevation of boiling point is given by the experssion:

ICSE-SAMPLE PAPER 3 (CHEMISTRY) -QUESTIONS
  1. Which one of the following is an oxide ore ?

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  2. The cell reaction is spontaneous or feasible when e.m.f. of the cell i...

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  3. The molal elevation constant is the ratio of the elevation in boiling ...

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  4. In a crystal, the atoms are located at the position of .... potential ...

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  5. Designation of the pattern as AB, AB, AB...... etc., of successive ver...

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  6. Which of the following is not a colligative property?

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  7. Conductivity of a solution is directly proportional to:

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  8. Identify the alloy containing a non-metal as a constitutent in it.

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  9. Which of the following has lowest reducing character ?

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  10. Alkyl halides undergo:

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  11. When acetaldehyde is treated with Grignard reagent, followed by hydrol...

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  12. When oxalic acid is heated with glycerol we get :

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  13. Which of the following reagent cannot be used to prepare an alkyl chlo...

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  14. Which of the following elements is present as the impurity to the maxi...

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  15. The number of faradays required to reduce one mole of Cu^(2+) to meta...

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  16. Which solution is isotonic to the blood ?

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  17. Which of the following statements regarding Ideal solutions is false?

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  18. A solid has a structure in which 'W' atoms are located at the corners ...

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  19. Voids in two-dimensional hexagonal close packed structure are

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  20. P(4) O(10) has bridging O atoms.

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