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What is meant by positive and negative d...

What is meant by positive and negative deviation from Raoult's law ?

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If the vapour pressure of a solution is higher than expected, it is called positive deviation from Raoult.s law. If the vapour pressure of a solution is lower than expected, it is called negative deviation from Raoult.s law.
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U-LIKE SERIES-SOLUTION-LONG ANSWER QUESTIONS-I
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  2. Define an ideal solution and write one of its characteristics.

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  3. What is meant by positive and negative deviation from Raoult's law ?

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  4. What mass of NaCl must be dissolved in 65.0 g of water to lower the fr...

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  5. State Raoult's law for a solution containing volatile components. How ...

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  7. On dissolving 19,5 g of CH2 FCOOH in 500 g of water, a depression of ...

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  8. Heptane and octane form an ideal solution at 373 K. The vapour pressur...

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  9. Using Raoult's law, explain how the total vapour pressure over the sol...

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  10. Calculate the mass of a non-volatile solute (molar mass = 40 g/mol) wh...

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  14. At 300 K, 36 g of glucose, C6H12O6 present per litre in its solution ...

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  15. Why is the vapour pressure of a solution of glucose in water lower tha...

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  17. Give reasons for the following: (a) When 30 mL of ethyl alcohol and 3...

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  18. Calculate the amount of CaCl2 [molar mass = 111 g "mol"^(-1) ] which ...

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  19. A 4% solution of sucrose is isotonic with 3% solution of an unknown or...

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  20. What is the mole fraction of a solute, in 2.5 m aqueous solution ?

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