मराठी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Define the following modes of expressing the concentration of a solution. Which of these modes are independent of temperature and why? x (mole fraction)

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प्रश्न

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

x (mole fraction)

दीर्घउत्तर
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उत्तर

Mole fraction of a component (x) = `"No. of moles the component"/"Total number of moles of all the component"`

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पाठ 2: Solutions - Exercises [पृष्ठ २७]

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एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 12
पाठ 2 Solutions
Exercises | Q VI. 55. (v) | पृष्ठ २७

संबंधित प्रश्‍न

Define mole fraction.


When KOH solution is added to potassium dichromate solution the colour of solution
changes to yellow, because _______

(A) chromate ion changes to dichromate ion

(B) dichromate ion changes to chromate ion

(C) oxidation number of chromium changes from + 6 to + 4

(D) oxidation number of chromium changes from + 4 to +6


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The volume of 4 N HCl and 10 N HCl required to make 1 litre of 6 N HCl are ____________.


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Which of the following units is useful in relating concentration of solution with its vapour pressure?


Which of the following concentration unit is independent of temperature?


4 L of 0.02 M aqueous solution of NaCl was diluted by adding one litre of water. The molality of the resultant 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:


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

(iii) w/V (mass by volume percentage)


Match List-I with List-II:

List-I List-II
A. ppm I. molL-¹
B. Molarity II. No units
C. Molality III. Independent of temperature
D. Mole fraction IV. Very dilute solutions

Choose the correct answer from the options given below:


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?


138 g ethyl alcohol is mixed with 72 g of water. The ratio of mole fraction of alcohol to water is ______.


A given solution of H2O2 is 30 volumes. Its concentration in terms of molarity is ______.


A sample of Ferrous sulphide reacts with dil. H2SO4 to from H2S which contains 9% hydrogen by volume. The percentage of fee in the sample, is ______.


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