Question

plz ans...... fastly..........!!!!!!

Answer 1

ans set A-A hypotonic solution is any solutionthat has a lower osmotic pressure than another solution. In the biological fields, this generally refers to asolution that has less solute and more water than another solution.
ans set B-A hypertonic solution is a particular type of solution that has a greater concentration of solutes on the outside of a cell when compared with the inside of a cell.
ans set C-An isotonic solution refers to two solutionshaving the same osmotic pressure across a semipermeable membrane. This state allows for the free movement of water across the membrane without changing the concentration of solutes on either side.
2012 March
ans set A-Molarity = mol/L 
Molality = mol/kg of solvent 

so they are equal when 1L of dissolved solution = 1kg of solvent 

ie water at 25 C
ans set B-Solubility is the property of a solid, liquid or gaseous chemical substance called solute to dissolve in a solid, liquid or gaseous solvent. Solubility is expressed usually as moles of solute per 100 grams of solvent.
ans set C-A 1.0 m solution contains 1 mole of solute per kilogram of solvent.
Unit of molality is moles/ kg. Molality of solution does not change with the temperature of solution. In case of molality it is ratio of moles to mass. Mass is the same at any temperature hence molality wont change with change in temperature.
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