English

Choose the most correct option. In calculating osmotic pressure the concentration of solute is expressed in _______. - Chemistry

Advertisements
Advertisements

Question

Choose the most correct option.

In calculating osmotic pressure the concentration of solute is expressed in _______.

Options

  • molarity

  • molality

  • mole fraction

  • mass percent

MCQ
Fill in the Blanks
Advertisements

Solution

In calculating osmotic pressure the concentration of solute is expressed in molarity.

Explanation:

The pressure difference required to block the flow of solvent across a semipermeable membrane from low concentration solution to high concentration solution is referred to as the osmotic pressure of a solution. In morality, the osmotic pressure of a solution is proportional to the molar concentration.

shaalaa.com
  Is there an error in this question or solution?
Chapter 2: Solutions - Exercises [Page 44]

APPEARS IN

Balbharati Chemistry [English] Standard 12 Maharashtra State Board
Chapter 2 Solutions
Exercises | Q 1.03 | Page 44

RELATED QUESTIONS

Determine the osmotic pressure of a solution prepared by dissolving 2.5 × 10−2 g of K2SO4 in 2L of water at 25°C, assuming that it is completely dissociated.

(R = 0.0821 L atm K−1 mol−1, Molar mass of K2SO4 = 174 g mol−1)


Which of the following is not a colligative property?


What happens when the external pressure applied becomes more than the osmotic pressure of solution?


At 300 K, 36 g of glucose present in a litre of its solution has an osmotic pressure of 4.98 bar. If the osmotic pressure of the solution is 1.52 bars at the same temperature, what would be its concentration?


Determine the osmotic pressure of a solution prepared by dissolving 25 mg of K2SO4 in 2 liter of water at 25°C, assuming that it is completely dissociated.


Define osmotic pressure.


Define Semipermeable membrane


Calculate the mass of NaCl (molar mass = 58.5 g mol−1) to be dissolved in 37.2 g of water to lower the freezing point by 2°C, assuming that NaCl undergoes complete dissociation. (Kf for water = 1.86 K kg mol−1)


Define the following term:
isotonic solution


Define the following term:

Hypotonic solution


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?


Answer the following in one or two sentences.

What is osmotic pressure?


Answer the following in one or two sentences.

A solution concentration is expressed in molarity and not in molality while considering osmotic pressure. Why?


Answer the following.

What are isotonic and hypertonic solutions?


Which of the following statements is applicable for 0.1 M urea solution and 0.1 M sucrose solution?


Define Osmosis.


Which of the following is a colligative property?


20 g of a substance were dissolved in 500 mL of water and the osmotic pressure of the solution was found to be 600 mm of mercury at 15°C. The molecular weight of the substance is ______.


The average osmotic pressure of human blood is 7.8 bar at 37°C. What is the concentration of an aqueous NaCl solution that could be used in the blood stream?


The temperature at which 10% aqueous solution of (W/V) of glucose will show the osmotic pressure of 16.4 atoms is: (R = 0.082 L atom K−1 mol1)


At a given temperature, osmotic pressure of a concentrated solution of a substance ______.


Which of the following statements is false?


Isotonic solutions must have the same:

(i) solute

(ii) density

(iii) elevation in boiling point

(iv) depression in freezing point


Give an example of a material used for making semipermeable membrane for carrying out reverse osmosis.


How can you remove the hard calcium carbonate layer of the egg without damaging its semiprermiable membrane? Can this egg be inserted into a bottle with a narrow neck without distorting its shape? Explain the process involved.


Osmotic pressure of a solution increases if


Isotonic solutions have same


Which one of the following is a colligative property?


Osmotic pressure of a solution containing 2 g dissolved protein per 300 cm3 of solution is 20 mm of Hg at 27°C. The molecular mass of protein is ______.


The following solutions were prepared by dissolving 10 g of glucose (C6H12O6) in 250 ml of water (P1), 10 g of urea (CH4N2O) in 250 ml of water (P2) and 10 g of sucrose (C12H22O11) in 250 ml of water (P3). The right option for the decreasing order of osmotic pressure of these solutions is


Assertion (A) : Osmotic pressure is a colligative property.

Reason (R) : Osmotic pressure is proportional to the molality.


Determine the osmotic pressure of a solution prepared by dissolving 2.32 × 10−2 g of K2SO4 in 2L of solution at 25°C assuming that K2SO4 is completely dissociated.

(R = 0.082 L atm K−1 mol, Molar mass K2SO4 = 174 g mol−1)


Isotonic solutions are the solutions having the same ______.


A solution containing 10 g glucose has osmotic pressure 3.84 atm. If 10 g more glucose is added to the same solution, what will be its osmotic pressure? (Temperature remains constant)


Prove that: M2 = `(W_2RT)/(πV)`.


Name the four colligative properties that are oftently used for determination of molecular mass.


Write the condition of reverse osmosis.


The 'X' g nonvolatile solute having molar mass 196 g mol-1 is dissolved in 3 dm³ water. Calculate the value of 'X' if resulting solution has osmotic pressure 0.8 atm at 300 К.
(R = 0.0821dm³ atm K-1 mol-1)


The plot of osmotic pressure (π) vs concentration (mol L−1) for a solution gives a straight line with slope 25.73 L bar mol−1. The temperature at which the osmotic pressure measurement is done is ______.

(Use R = 0.083 L bar mol−1 K−1)


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×