हिंदी

Why is Molality of a Solution Independent of Temperature?

Advertisements
Advertisements

प्रश्न

Why is molality of a solution independent of temperature?

Advertisements

उत्तर

 

Molality:
Molality is amount of solute per mass of solvent. So, the concentration of solvent is expressed in terms of mass, and the mass of a substance is not affected by the change in temperature. Hence, molality is independent of temperature.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
2015-2016 (March)

APPEARS IN

वीडियो ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्न

Calculate the mole fraction of benzene in solution containing 30% by mass in carbon tetrachloride.


Calculate the mass of urea (NH2CONH2) required in making 2.5 kg of 0.25 molal aqueous solution.


Calculate (a) molality (b) molarity and (c) mole fraction of KI if the density of 20% (mass/mass) aqueous KI is 1.202 g mL−1.


A solution is obtained by mixing 300 g of 25% solution and 400 g of 40% solution by mass. Calculate the mass percentage of the resulting solution.


If the density of some lake water is 1.25 g mL−1 and contains 92 g of Na+ ions per kg of water, calculate the molality of Na+ ions in the lake.


A sample of 12 M Concentrated hydrochloric acid has a density 1.2 M gL-1 calculate the molality.


The sum of all mole fraction for a mixture is always equal to ____________.


An X molal solution of a compound in benzene has mole fraction of solute equal to 0.2. The value of X is ____________.


4.0 g of NaOH is dissolved in 100 ml solution. The normality of the solution is ____________.


The molarity of pure water is ____________.


On adding a solute to a solvent having vapour pressure 0.80 atm, vapour pressure reduces to 0.60 atm. Mole fraction of solute is:


Mole fraction of the solute in a 1.00 molal aqueous solution is ____________.


What is the normality of a 1 M solution of H3PO4?


200 ml of water is added to 500 ml of 0.2 M solution. What is the molarity of this diluted solution?


For preparing 0.1 N solution of a compound from its impure sample of which the percentage purity is known, the weight of the substance required will be:


If N/10 50 ml H2SO4, N/3 30 ml HNO3, N/2 10 ml HCl is mixed and solution is made to 1 L. Then normality of the resultant solution is:


A solution is prepared by dissolving 10 g NaOH in 1250 mL of a solvent of density 0.8 mL/g. The molality of the solution in mol kg–1 is:


The number of moles of NaCl in 3 litres of 3 M solution is ____________.


Cone. H2SO4 is 98% H2SO4 by mass has d = 1.84 g cm−3. Volume of acid required to make one litre of 0.1 M H2SO4 is:


Which of the following is a correct statement for C2H5Br?


Define the following modes of expressing the concentration of a solution. Which of these modes are independent of temperature and why?

x (mole fraction)


Carbon percentage (by weight) in crude petroleum may be about


The unit of ebullioscopic constant is


What is molarity of resulting solution obtained by mixing 8.5 L of 0.5 m urea solution and 500 ml of 2 m urea solution?


What is the normality of 0.3 m H3Pcl solution?


250 mL of 0.5 M NaOH was added to 500 mL of 1 M HCl. The number of unreacted HCl molecules in the solution after complete reaction is ______ × 1021. (Nearest integer) (NA = 6.022 × 1023).


The mole fraction of a solute in a 100 molal aqueous solution is ______ × 10-2. (Round off to the Nearest Integer).

[Given :Atomic masses : H : 1.0 u, O : 16.0 u]


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×