Q.1 What happens if a patient is given hypertonic solution of glucose? (1 mark)
Q.4 Why the boiling point of a liquid get raised on dissolution of non volatile solute in it ? (1 mark)
Q.6 What will happen to the boiling point of the solution on mixing two miscible liquids showing negative deviation from Raoult 's law? (1 mark)
1. If a patient is given hypertonic solution of glucose more than 0.9% mass/ volume, the fluid balance in the human body will be disturbed with the osmosis. RBC’s gets dehydrated and going to die unless the water balance is reversed. This increase of additional water in RBC’s can cause high blood pressure.
2. The boiling point of a liquid gets raised on dissolution of non volatile solute in it because the vapour pressure of the solvent is lowered by the solute particles. The concentration of solute particles plays an important role here. Due to decrease in the vapour pressure of solvent extra heat is needed to boil the solution.
3. The boiling point of the solution increases as the vapour pressure of the solution is lowered (needs more heat to boil) on mixing two miscible liquids showing negative deviation from Raoult 's law.
Answer1: If a patient is given hypertonic solution of glucose, that is more than 0.9 % mass/volume solution, then the patient's RBCs will collapse or shrink due to loss of water due to osomosis. This will lead to a condition known as Edema, a condition in which the water from RBCs is accumulated in the tissues and other interstitial spaces, leading to swelling and puffiness in body.
Answer 2: On adding, the non-volatile solute, the vapour pressure of the solution decreases considerably, As Boiling Point is defined as the temperature at which vapour pressure becomes equal to Atmospheric pressure , Hence, Due to decrease in Vapour Pressure of solution, More heat is needed to be supplied to boil the solution, or Boiling Point gets increased
Answer 3: Here, Vapour Pressure of Solution lowers from its original value. Hence the Heat needed to boil the mixture is greater than original required. Hence Boiling Point increases in case of negative Deviation from Rault's Law