211.Give one example each of miscible liquid pairs showing positive and negative deviations from Raoult’s law. Give one reason for such deviations.
544 Views
212.State Raoult’s law for solutions where only solvent is volatile. Derive a mathematical exression for this law.
161 Views
213.
State with a suitable diagram and appropriate examples why some non-ideal solutions. Show positive deviation from ideal behaviour.
146 Views
214.What is meant by abnormal mass of solute? Discuss the factors which bring abnormality in the experimentally determined molecular masses of solutes using colligative properties.
237 Views
Advertisement
215.State the type of non-ideality exhibited by a solution of cyclohexane and ethanol or a solution of acetone and chloroform (only one case). Give reason for your answer.
285 Views
216.Miscible liquid pairs often show negative or positive deviation from Raoult’s law. What is the reason for such deviations? Give one example of each type of liquid pairs.
240 Views
Long Answer Type
217.Define vapour pressure of a liquid. What happens to the vapour pressure when (a) a volatile solute dissolves in the liquid and (b) non-volatile solute dissolvedin it?
124 Views
218.Show graphically how the vapour pressure of a solvent and a solution in it of a non-volatile solute change with temperature. Show on this graph the boiling points of the solvent and the solution. Which is higher and why?
297 Views
Advertisement
219.An antifreeze solution is prepared from 222.6 g of ethylene glycol (C2H4(OH)2) and 200 g of water. Calculate the molality of the solution. If the density of this solution be 1.072 g ml–1, what will be the molarity of the solution?
163 Views
220.At 300 K, 36 g of glucose (C6H12O6) present per litre in its aqueous solution has an osmotic pressure of 4.98 bar. If the osmotic pressure of another solution of glucose is 1.52 bar at the same temperature, what would be its concentration?
Short Answer Type
Long Answer Type
