What are the factors on which the vapour pressure of a liquid depends?

Answer:

The vapour pressure of a liquid depend on following factor.
(i) Temperature.
(ii) Type of solute in solution (i.e., whether the solute is volatile or non-volatile.

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What are the different types of azetropes? Give one example of each.

Answer:

There are two types of azetropes:
(i) Minimum boiling azetropes →Ethanol + water.
(ii) Maximum boiling azetropes →Chloroform + acetone.

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What happens when blood cells are placed in pure water?


ANswer:

When blood cells are placed in pure water than
Due to osmosis, water molecules move into the blood cells through the cell walls. As a result the blood cells swell and may even burst.
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The osmotic pressure of polymers (Macro-molecules) are determined by osmotic pressure and not by other colligative properties. Explain.

Answer:

The osomatic pressure of polymer are determined by osmotic pressure because osmotic pressure is measured at room temperature whereas macro-molecules undergo change in structure at high temperature.
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State the conditions under which the Raoult’s law holds good.

Answer:

The Raoult's law holds good on the following condition:
(i) the two volatile components of the solution form an ideal solution.
(ii) the solution containing non-volatile solute is very dilute.
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