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)
Advertisements
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 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 Co(NO3)2 . 6H2O in 4.3 L of solution.
Define molarity (M).
22.22 gram of urea was dissolved in 300 grams of water. Calculate the number of moles of urea and molality of the urea solution.
(Given: Molar mass of urea = 60 gram mol−1)
A sample of 12 M Concentrated hydrochloric acid has a density 1.2 M gL-1 calculate the molality.
Molality of a solution relates the ____________.
The molarity of the solution containing 7.1 g of Na2SO4 in 100 ml of aqueous solution is ____________.
The molarity of pure water is ____________.
What is the normality of a 1 M solution of H3PO4?
Which of the following units is useful in relating concentration of solution with its vapour pressure?
What is the mole fraction of solute in 1.00 m aqueous solutions?
Define the following modes of expressing the concentration of a solution. Which of these modes are independent of temperature and why?
m (Molality)
The concentration of water molecules in pure water at 298 K is?
What is the ratio of mass of an electron to the mass of a proton?
The unit of ebullioscopic constant is
Calculated the mole fraction of benzene in a solution containing 30% by mass of its is carbon tetrachloride
4.5 g of compound A (MW = 90) was used to make 250 mL of its aqueous solution. The molarity of the solution in M is x × 10−1. The value of x is ______. (Rounded-off to the nearest integer)
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 ______.
