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Why is boiling point of a solvent elevat...

Why is boiling point of a solvent elevated upon the addition of a non-volatile solute ?

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**Step-by-Step Solution:** 1. **Understanding Non-Volatile Solutes**: - A non-volatile solute is a substance that does not readily evaporate into a gas under existing conditions. Examples include substances like urea, salt, and sugar. 2. **Vapor Pressure Concept**: - Every liquid has a characteristic vapor pressure, which is the pressure exerted by its vapor when it is in equilibrium with its liquid phase. A non-volatile solute has a vapor pressure of zero because it does not evaporate. ...
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For a non-volatile solute

The boiling point of a solution gets raised on dissolution of non-volatile solute. Explain how this property is used for finding the molecular mass of the solute ?

Boiling point of chloroform is 61°C. After addition of 5.0 g of a non-volatile solute to 20 g chloroform boils at 64.63°C. If kb = 3.63 K kg mol-1, what is the molecular weight of the solute?

Given that DeltaT_(f) is the depression in freezing point of the solvent in a solution of a non-volatile solute of molarity m ,the quantity underset(m rarr0)(Lt) (DeltaT_(f)//m) is equal to ……………. .

If DeltaT is the elevation in boiling point of a solvent and m is the number of moles of the solute per kilogram of solute, what is the relationship between DeltaT and m?

Fill in the blanks choosing appropriate word/words from those given in the brackets : (inversely, more, less, directly, ideal, Raoult's, non-ideal, do not) The ............. of the boiling point of a solvent by the addition of a solute is ........... proportional to the molality of the solution.

The mole fraction of the solvent in the solution of a non-volatile solute is 0.980. The relative lowering of vapour pressure is :

The boiling point of an aqueous solution of a non-volatile solute is 100.15^(@)C . What is the freezing point of an aqueous solution obtained by dilute the above solution with an equal volume of water. The values of K_(b) and K_(f) for water are 0.512 and 1.86^(@)C mol^(-1) :

The boiling point of an aqueous solution of a non-volatile solute is 100.15^(@)C . What is the freezing point of an aqueous solution obtained by dilute the above solution with an equal volume of water. The values of K_(b) and K_(f) for water are 0.512 and 1.86^(@)C mol^(-1) :

The vapour pressure of pure solvent is 0.8 mm of Hg at a particular temperature. On addition of a non-volatile solute ‘A’ the vapour pressure of solution becomes 0.6 mm of Hg. The mole fraction of component ‘A’ is:

ICSE-SOLUTIONS-EXERCISE (PART-II Descriptive Questions) (VERY SHORT ANSWER QUESTIONS)
  1. What are maximum boiling azetropes? Give one example.

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  2. Give an example of nearly ideal solution.

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  3. Why is boiling point of a solvent elevated upon the addition of a non...

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  4. Why is freezing point depressed when a non-volatile solute is added t...

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  5. What is an antifreeze?

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  6. Define molal elevation constant or ebullioscopic constant.

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  7. Define cryoscopic constant.

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  8. Why is osmotic pressure considered as colligative property?

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  9. What are isotonic solutions ?

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  10. Hypotonic and Hypertonic solution

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  11. Why NaCl solution freezes at lower temperature than water but boils a...

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  12. Why does molality of a solution remains unchanged with change in temp...

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  13. Why is the cooking temperature in pressure cooker higher than that in...

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  14. Solution A is obtained by dissolving 1 g of urea in 100 g of water an...

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  15. Which of the following solutions shows positive deviation from Raoult'...

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  16. When is the value of van't Hoff factor more than one?

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  17. Give one example each when van't Hoff factor is 2 and (1)/(2).

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  18. How is that the boiling points of the following solutions in water ar...

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  19. Mention a large scale use of the phenomenona of reverse osmosis.

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  20. What is the sum of mole fractions of all the components in a three-co...

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