Advertisements
Advertisements
Question
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
Solution
Given: Mass of benzene = 22 g
Mass of carbon tetrachloride = 122 g
Mass of solution = Mass of benzene + Mass of carbon tetrachloride
= 22 + 122
= 144 g
Mass percentage of benzene = `"Mass of benzene"/"Mass of solution" xx 100`
= `22/144 xx 100`
= 15.28%
Mass percentage of carbon tetrachloride = `"Mass of carbon tetrachloride"/"Mass of solution" xx 100`
= `122/144 xx 100`
= 84.72%
APPEARS IN
RELATED QUESTIONS
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.
Define mole fraction.
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.
Nalorphene (C19H21NO3), similar to morphine, is used to combat withdrawal symptoms in narcotic users. Dose of nalorphene generally given is 1.5 mg. Calculate the mass of 1.5 × 10−3 m aqueous solution required for the above dose.
A sample of 12 M Concentrated hydrochloric acid has a density 1.2 M gL-1 calculate the molality.
Molarity of liquid HCl will be if the density of the solution is 1.17 gm/cc.
An X molal solution of a compound in benzene has mole fraction of solute equal to 0.2. The value of X is ____________.
2.5 litres of NaCl solution contain 5 moles of the solute. What is the molarity?
25 ml of a solution of barium hydroxide on titration with a 0.1 molar solution of hydrochloric acid gave a titre value of 35 ml. The molarity of barium hydroxide solution was ______.
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 units is useful in relating concentration of solution with its vapour pressure?
Mole fraction of C3H5(OH)3 in a solution of 36 g of water and 46 g of glycerine 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)
Define the following modes of expressing the concentration of a solution. Which of these modes are independent of temperature and why?
m (Molality)
What is the ratio of mass of an electron to the mass of a proton?
The unit of ebullioscopic constant is
A solution has been prepared by dissolving 5 g of urea in 95 g of water. What is the mass percentage of urea in the solution?
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?
A given solution of H2O2 is 30 volumes. Its concentration in terms of molarity is ______.
4 ml of pure A (d = 2.45 gm/ml) was added to 46 ml of B (d = `25.1/23` gm/ml), the molarity of a solution of A in B will be ______, if the density of the final solution is 1.8 gm/ml.
Given: Molar mass of A = 98, Molar mass of B = 46
