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Molal elevation constant....

Molal elevation constant.

A

Cryoscopic constant

B

Gas constant

C

Ebullioscopic constant

D

Freezing point depression constant

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The correct Answer is:
C
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AB_(2) is 10% dissociated in water to A^(2+) and B^(-) The boiling point of a 10.0 molal aqueous solution of AB_(2) is "________" ""^(@)C. (Round off to the Nearest Integer). [Given : Molal elevation constant of water k _(b) = 0.5 K kg mol ^(-1) boiling point of pure water = 100^(@)C ]

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Each question contains STATEMENT-I(Assertion) and STATEMENT-2(Reason).the statement carefully and mark the correct answer accoring to the instrution given below: STATEMENT - 1 : Elevation in boiling point will be high if the molal elevation constant of the liquid is high. STATEMENT - 2 : Elevation in boiling point is a colligative property.

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

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MODERN PUBLICATION-SOLUTIONS-REVISION EXERCISES (MULTIPLE CHOICE QUESTIONS)
  1. Which of the following solutions shows maximum depression in freezing ...

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  2. The number of moles of NaCl in 3 litres of 3 M solution is:

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  3. CaCl(2) is used as

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  4. For solutes which do not undergo any association or dissociation in a ...

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  5. Which of the following 0.1 m aqueous solution is likely to have the...

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  6. Which of the following aqueous solutions will have the minimum freezi...

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  7. Which has the minimum freezing point ?

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  8. Mole fraction of a solute in 2.5 molal aqueous solution is

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  9. Which of the following is not ture for acidic solutions at room temper...

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  10. Two solutions A and B are separated by semipermeable membrane. If liqu...

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  11. The van't Hoff factor i for a compound which undergoes dissociation in...

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  12. At the higher altitudes the boiling point of water lowers because

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  13. Maximum amount of a solid slute that can be dissolved in a specified a...

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  14. Low concentration of oxygen in the blood ndtissues of people living at...

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  15. The units of ebullioscopic constant is.

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  16. Molar solution means 1 mole of solute present in

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  17. Increasing the temperature of an aqueous solution wil case

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  18. Colligative properties depend on

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  19. Molal elevation constant.

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  20. Which of the following has highest value of Van't Hoff factor?

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