Advertisements
Advertisements
प्रश्न
If the solubility product of CuS is 6 × 10−16, calculate the maximum molarity of CuS in aqueous solution.
Advertisements
उत्तर
Maximum molarity of CuS in an aqueous solution = Solubility of CuS in mol L−1
If S is the solubility of CuS in mol L−1, then,
\[\ce{CuS <=> Cu^{2+} + S^{2-}}\]
Ksp = [Cu2+][S2−]
= S × S
= S2
∴ S2 = 6 × 10−16
S = `sqrt (6 xx 10^-16)`
= 2.45 × 10−8 mol L−1
This is the maximum amount of CuS in 1 L of solution.
∴ The maximum molarity of the solution is 2.45 × 10−8 M.
संबंधित प्रश्न
Why is molality of a solution independent of temperature?
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 molarity (M).
A solution is obtained by mixing 300 g of 25% solution and 400 g of 40% solution by mass. Calculate the mass percentage of the resulting solution.
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?
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.
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.
Which of the following is a quantitative description of the solution?
2.5 litres of NaCl solution contain 5 moles of the solute. What is the molarity?
The mole fraction of the solute in one molal aqueous solution is ____________.
Mole fraction of the solute in a 1.00 molal aqueous solution is ____________.
For preparing 0.1 N solution of a compound from its impure sample of which the percentage purity is known, the weight of the substance required will be:
If N/10 50 ml H2SO4, N/3 30 ml HNO3, N/2 10 ml HCl is mixed and solution is made to 1 L. Then normality of the resultant solution is:
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:
The number of moles of NaCl in 3 litres of 3 M solution 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:
Define the following modes of expressing the concentration of a solution. Which of these modes are independent of temperature and why?
x (mole fraction)
The concentration of water molecules in pure water at 298 K is?
