van't Hoff proved that osmotic pressure (`pi`) is a colligative property. For an ideal solution, osmotic pressure(`pi`) is helpful to determine that molecular mass of solute using `M_(B)=(W_(B)RT)/(pi.V)` Relation can exxpressed by the curve (C = concentration) :
A
B
C
D
Text Solution
Verified by Experts
The correct Answer is:
a
Topper's Solved these Questions
DILUTE SOLUTION
NARENDRA AWASTHI|Exercise Level 1 (Q.62 To Q.91)|1 Videos
Define osmotic pressure. How can molar mass of a substance be determined from te measurement of osmotic pressure of a solution?
A solution contains non volatile solute of molecular mass M_(2) . Which of the following can be used to claculate the molecular mass of solute in terms of osmotic pressure ?
What is Van't Hoff factor? What possible values can it have if the solute molecules undergo dissociation in solution. Prove that osmotic pressure is a colligative property?
What is Van't Hoff factor? What possible values can it have if the solute molecules undergo association. Prove that osmotic pressure is a colligative property?
The average osmotic pressure of human blood is 7.8 bar at 37^@C . the concentration of aqueous of NaCl solution that could be used in the blood stream is
Properties such as boiling point, freezing point and vapour pressure of a pure solvent change when solute molecules are added to get a homogeneous solution. These are called colligative properties. Applications of colligative properties are very useful in day-to-day life One of its examples is the use of ethylene glycol and water mixture as an anti-freezing liquid in the radiator of automobiles.A solution M is prepared by mixing ethanol and water. The mole fraction of ethanol in the mixture is 0.9.Given: Freezing point depression constant of water (Kfwater)=1.86Kkgmol−1Freezing point depression constant of ethanol(Kfethanol)=2.0Kkgmol−1 Boiling point elevation constant of water(Kbwater)=0.52Kkgmol−1 Boiling point elevation constant of ethanol (Kbethanol)=1.2Kkgmol−1 Standard freezing point of water =273K Standard freezing point of ethanol =155.7K Standard boiling point of water =373K Standard boiling point of ethanol =351.5K Vapour pressure of pure water =32.8mmHg Vapour pressure of pure ethanol =40mmHg Molecular weight of water =18gmol−1 Molecular weight of ethanol =46gmol−1 In answering the following questions, consider the solutions to be ideal dilute solutions and solutes to be non-volatile and non-dissociative. Water is added to the solution M such that the mole faraction of water in the solution becomes 0.9. the boiling point of this solution is
The osmotic pressures of 0.010 M solutions of KI and sucrose ( C_(12)H_(22)O_(11) ) are 0.432 atm and 0.24 atm respectively. The van't Hoff factor for KI is :
Insulin (C_(2)H_(10)O_(5))_(n) is dissolved in a suitable solvent and the osmotic pressure (pi) of solutions of various concentrations (g//cm^(3))C is measured at 20^(@)C . The slope of a plot of pi against C is found to be 4.65 xx 10^(-3) . The molecular weight of insulin is:
A certain non-volatile electrolyte contain 40% carbon, 6.7% hydrogen and 53.3% oxygen.An aqueous solution containing 5% by mass of the solute boils at 100.15^(@) C. Determine molecular formula of the compound( K_(b) =0.51^(@)C//m ):
What is the correct sequence of osmotic pressure of 0.01 M aq. solution of : (a) Al_(2)(SO_(4))_(3)" "(b) Na_(3)PO_(4)" "(c ) BaCl_(2)" " (d) Gluc ose
NARENDRA AWASTHI-DILUTE SOLUTION-Level 3 - Match The Column
