Advertisements
Advertisements
प्रश्न
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)
उत्तर
It is mass by volume percentage (W/v): thus mathematically,
= `"W of solute"/"100 ml of solution" xx 100`
where W is weight of solute in grams, but measures volume of solution in mililitres (ml)
APPEARS IN
संबंधित प्रश्न
Calculate the mole fraction of benzene in solution containing 30% by mass in carbon tetrachloride.
An antifreeze solution is prepared from 222.6 g of ethylene glycol (C2H6O2) and 200 g of water. Calculate the molality of the solution. If the density of the solution is 1.072 g mL−1, then what shall be the molarity of the solution?
If the solubility product of CuS is 6 × 10−16, calculate the maximum molarity of CuS in aqueous solution.
What is molal depression constant? Does it depend on nature of the solute?
Molarity of liquid HCl will be if the density of the solution is 1.17 gm/cc.
An aqueous solution of glucose is 10% in strength. The volume in which 1 g mole of it is dissolved, will be:
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:
Define the following modes of expressing the concentration of a solution. Which of these modes are independent of temperature and why?
M (Molarity)
The number of electrons involved in the reduction of one nitrate ion to hydrazine is
The molarity of the solution prepared by dissolving 6.3 g of oxalic acid (H2C2O4 · 2 H2O) in 250 mL of water in mol L-1 is x × 10-2. The value of x is ______. (Nearest integer)
[Atomic mass: H : 1.0, C : 12.0, O : 16.0]