Advertisements
Advertisements
Question
Define the following modes of expressing the concentration of a solution. Which of these modes are independent of temperature and why?
w/w (mass percentage)
Advertisements
Solution
Mass percentage (w/w): it is a weight by weight relationship. Thus mathematically,
Mass % of a component = `"W of the component in the solution"/"W of the solution" xx 100`
where, W represent weight of the component or solution.
APPEARS IN
RELATED QUESTIONS
Calculate the mass percentage of benzene (C6H6) and carbon tetrachloride (CCl4) if 22 g of benzene is dissolved in 122 g of carbon tetrachloride.
Calculate the mole fraction of benzene in solution containing 30% by mass in carbon tetrachloride.
Calculate the molarity of the following solution:
30 g of \[\ce{Co(NO3)2 * 6H2O}\] in 4.3 L of solution.
Define Molarity (M).
Molality of a solution relates the ____________.
5 ml of N HCl, 20 ml of N/2 H2SO4 and 30 ml of N/3 HNO3 are mixed together and volume made to one litre. The normality of the resulting solution is:
Mole fraction of the solute in a 1.00 molal aqueous solution is ____________.
Molarity of H2SO4 is 18 M. Its density is 1.8 g/ml. Hence molality 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:
Carbon percentage (by weight) in crude petroleum may be about
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?
Calculated the mole fraction of benzene in a solution containing 30% by mass of its is carbon tetrachloride
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 ______.
A 5% solution of \[\ce{Na2SO4.10H2O}\] (MW = 3 22) is isotonic with 2% solution of non- electrolytic, non volatile substance X. Find out the molecular weight of X.
