Advertisements
Advertisements
प्रश्न
Calculate the mass percentage of benzene (C6H6) and carbon tetrachloride (CCl4) if 22 g of benzene is dissolved in 122 g of carbon tetrachloride.
Advertisements
उत्तर
Mass of solution = Mass of benzene + Mass of carbon tetrachloride
= 22 g + 122 g
= 144 g
Mass percentage of benzene = `"Mass of benzene"/"Mass of solution" xx 100`
= `(22 "g")/(144 "g") xx 100`
= 15.28%
Mass percentage of carbon tetrachloride = `"Mass of carbon tetrachloride"/"Mass of solution" xx 100`
= `(122 "g")/(144 "g") xx 100`
= 84.72%
APPEARS IN
संबंधित प्रश्न
Define Mole fraction.
Define Molality.
What is molal depression constant? Does it depend on nature of the solute?
The sum of all mole fraction for a mixture is always equal to ____________.
Molarity of liquid HCl will be if the density of the solution is 1.17 gm/cc.
The molarity of pure water is ____________.
An aqueous solution of glucose is 10% in strength. The volume in which 1 g mole of it is dissolved, will be:
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:
2.5 litres of NaCl solution contain 5 moles of the solute. What is the molarity?
Mole fraction of the solute in a 1.00 molal aqueous solution is ____________.
Which of the following concentration terms is/are independent of temperature?
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:
Which of the following concentration unit is independent of temperature?
Which of the following is a correct statement for C2H5Br?
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:
The de Broglie wavelength of a car of mass 1000 kg and velocity 36 km/hr is :
138 g ethyl alcohol is mixed with 72 g of water. The ratio of mole fraction of alcohol to water is ______.
A 6.50 molal solution of KOH (aq.) has a density of 1.89 g cm−3. The molarity of the solution is ______ mol dm−3. (Round off to the Nearest Integer)
[Atomic masses: K: 39.0 u; O: 16.0 u; H: 1.0 u]
A given solution of H2O2 is 30 volumes. Its concentration in terms of molarity is ______.
