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Define the following terms :
a. Cryoscopic constant
b. Resistivity
Concept: Colligative Properties and Determination of Molar Mass
Define the following term:
Hypotonic solution
Concept: Colligative Properties and Determination of Molar Mass >> Osmosis and Osmotic Pressure
Define the following term:
Hypotonic solution
Concept: Colligative Properties and Determination of Molar Mass >> Osmosis and Osmotic Pressure
What is the freezing point of a liquid? The freezing point of pure benzene is 278.4 K. Calculate the freezing point of the solution when 2.0 g of a solute having molecular weight 100 g mol-1
is added to 100 g of benzene.
( Kf of benzene = 5.12 K kg mol-1 .)
Concept: Colligative Properties and Determination of Molar Mass >> Depression of Freezing Point
4.0 grams of NaOH ( Molar mass = 40.0 g mol-1 ) is dissolved in 500 cm3 of water. What is the molarity of NaOH solution?
Concept: Colligative Properties and Determination of Molar Mass
Choose the most correct option.
In calculating osmotic pressure the concentration of solute is expressed in _______.
Concept: Colligative Properties and Determination of Molar Mass >> Osmosis and Osmotic Pressure
Choose the most correct option.
In calculating osmotic pressure the concentration of solute is expressed in _______.
Concept: Colligative Properties and Determination of Molar Mass >> Osmosis and Osmotic Pressure
Choose the most correct option.
A living cell contains a solution which is isotonic with 0.3 M sugar solution. What osmotic pressure develops when the cell is placed in 0.1 M KCl solution at body temperature?
Concept: Colligative Properties and Determination of Molar Mass >> Osmosis and Osmotic Pressure
Choose the most correct option.
A living cell contains a solution which is isotonic with 0.3 M sugar solution. What osmotic pressure develops when the cell is placed in 0.1 M KCl solution at body temperature?
Concept: Colligative Properties and Determination of Molar Mass >> Osmosis and Osmotic Pressure
Choose the most correct option.
Pressure cooker reduces cooking time for food because _______.
Concept: Vapour Pressure Lowering
Answer the following in one or two sentences.
What is osmotic pressure?
Concept: Colligative Properties and Determination of Molar Mass >> Osmosis and Osmotic Pressure
Answer the following in one or two sentences.
What is osmotic pressure?
Concept: Colligative Properties and Determination of Molar Mass >> Osmosis and Osmotic Pressure
Answer the following.
What are isotonic and hypertonic solutions?
Concept: Colligative Properties and Determination of Molar Mass >> Osmosis and Osmotic Pressure
Answer the following.
What are isotonic and hypertonic solutions?
Concept: Colligative Properties and Determination of Molar Mass >> Osmosis and Osmotic Pressure
Derive the relationship between the degree of dissociation of an electrolyte and van’t Hoff factor.
Concept: Colligative Properties of Electrolytes
The vapour pressure of water at 20°C is 17 mm Hg. What is the vapour pressure of solution containing 2.8 g urea in 50 g of water?
Concept: Vapour Pressure of Solutions of Liquids in Liquids
A solution of citric acid C6H8O7 in 50 g of acetic acid has a boiling point elevation of 1.76 K. If Kb for acetic acid is 3.07 K kg mol-1, what is the molality of solution?
Concept: Relative Molecular Mass >> Boiling Point Elevation
The Henry’s law constant of a gas is 6.7 × 10–4 mol/(L bar). Its solubility when the partial pressure of the gas at 298 K is 0.65 bar is ______.
Concept: Solubility
State Raoult’s law.
Concept: Vapour Pressure of Solutions of Liquids in Liquids
