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
A solution of glucose in water is labelled as 10% w/w, what would be the molality and mole fraction of each component in the solution? If the density of solution is 1.2 g mL−1, then what shall be the molarity of the solution?
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.
Molality of a solution relates the ____________.
The sum of all mole fraction for a mixture is always equal to ____________.
1 M, 2.5 litre NaOH solution is mixed with another 0.5 M, 3 litre NaOH solution. Then find out the molarity of the resultant solution:
An X molal solution of a compound in benzene has mole fraction of solute equal to 0.2. The value of X is ____________.
The molarity of pure water is ____________.
10 g of NaCl is dissolved in 106 g of the solution. Its concentration is ____________.
2.5 litres of NaCl solution contain 5 moles of the solute. What is the molarity?
A solution made by dissolving 40 g NaOH in 1000 g of water is ____________.
4 L of 0.02 M aqueous solution of NaCl was diluted by adding one litre of water. The molality of the resultant solution is ______.
Define the following modes of expressing the concentration of a solution. Which of these modes are independent of temperature and why?
ppm. (parts per million)
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
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?
What is the normality of 0.3 m H3Pcl solution?
Calculated the mole fraction of benzene in a solution containing 30% by mass of its is carbon tetrachloride
138 g ethyl alcohol is mixed with 72 g of water. The ratio of mole fraction of alcohol to water is ______.
The mole fraction of a solute in a 100 molal aqueous solution is ______ × 10-2. (Round off to the Nearest Integer).
[Given :Atomic masses : H : 1.0 u, O : 16.0 u]
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
