On mixing equal volumes of water and ethanol, what type of deviation would you expect from Roult's law?

On mixing liquid X and liquid Y, volume of the resulting solution decreases, what type of deviation from Raoult's law is shown by the resulting solution? What change in temperature would you observe after mixing liquids X and Y.

When two liquid A and B are mixed, the solution becomes warmer. Which deviation solution exhibit from Rault's law?

0.01M solution of KCl and BaCl_2 are prepared in water. The freezing points of KCl is found to be -2^@C . What freezing point would you expect for BaCl_2 solution assuming both KCl and BaCl_2 to be completely ionised?

Non ideal solution exhibit either positive or negative deviations from Raoult's law. What are these deviations and why are they caused? Explain with one example for each type.

What type of deviation from ideal behaviour exist between acetone and chloroform?

Stability of a crystal is reflected in the magnitude of its melting point'. Comment. Collect melting points of solid water, ethyl alochol, diethyl ether and methane from a data book. What can you say about the intermolecular forces between these molecules?

10 cm^3 of a liquid A was mixed with 10 cm^3 of liquid B. The volume of the resulting solution was found to be 19.9 cm^3 . What do you conclude?

A man walks on a straight road from his home to a market 2.5 km away with a speed of 5 km h ^-1 . Finding the market closed, he instantly turns and walks back home with a speed of 7.5 km h^-1 . What is the average speed of the man over the interval of time (i) 0 to 30 min, (ii) 0 to 50 min, (Hi) 0 to 40. min? [Note: You will appreciate from this exercise why . it is better to define average speed as total path length divided by time, and not as magnitude of average velocity. You would not like to tell the tired man on his return home that his average speed was zero!]

What is meant by positive deviation from Raoult's law? Explain why this deviation is observed.