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Define the following terms : a. Mole f...

Define the following terms `:`
`a.` Mole fraction `b.` Molality
`c.` Molarity `d. Mass percentage.

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(a) Define the following terms : (i) Mole fraction (ii) Ideal solution (b) 15.0 g of an unknown molecular material is dissolved in 450g of water . The resulting solution freezes at -0.34^(@)C . What is the molar mass of the material ? (K_(f) for water = 1.86 K kg mol^(-1))

CENGAGE CHEMISTRY-NCERT BASED EXERCISE-NCERT Exercise
  1. विलयन को परिभाषित कीजिए । कितने प्रकार के विभिन्न विलयन संभव ...

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  2. Suppose a solide solution is formed between two substances, one whose ...

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  3. Define the following terms : a. Mole fraction b. Molality c. Mol...

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  4. Concentrated nitric acid used in the laboratory work is 68% nitric aci...

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  5. A solution of glucose in water is labelled as 10 "percent" w//w, what ...

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  6. How many mL of a 0.1M HCl are required to react completely with 1 g mi...

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  7. Calculate the percentage composition in terms of mass of solution obta...

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  8. An antifreeze solution is prepared from 222.6 g of ethylene glycol [C(...

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  9. A sample of drinking water was found to be severely contaminated with ...

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  10. What role does the molecular interaction play in a solution of alcohol...

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  11. Why do gases always tend to be less soluble in liquids as the temperat...

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  12. State Henry's law and mention some important applications ?

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  13. The partial pressure of ethane over a saturated solution containing 6....

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  14. What is meant by positive and negative deviations from Raoult's law an...

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  15. An aqueous solution of 2 per cent (wt.//wt) non-volatile solute exerts...

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  16. Heptane and octane form an ideal solution. At 373 K, the vapour pressu...

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  17. The vapour pressure of water is 12.3 kPa at 300 K. Calculate vapour pr...

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  18. Calculate the mass of a non-volatile solute ( molecular mass 40) which...

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  19. A solution containing 30 g of a non-volatile solute exactly in 90 g wa...

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  20. A 5% solution (by mass) of cane sugar in water has freezing point of 2...

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