Advertisements
Advertisements
प्रश्न
Based on solute-solvent interactions, arrange the following in order of increasing solubility in n-octane and explain.
Cyclohexane, KCl, CH3OH, CH3CN
Advertisements
उत्तर
n-octane is a non-polar solvent. Therefore, the solubility of a non-polar solute is greater than that of a polar solute in n-octane.
The order of increasing polarity is:
Cyclohexane < CH3CN < CH3OH < KCl
Therefore, the order of increasing solubility is
KCl < CH3OH < CH3CN < Cyclohexane
The following explanation applies to this:
Since both cyclohexane and n-octane are non-polar, they are fully soluble in each other. Due to its ionic nature, KCl is the least soluble (nearly insoluble) in n-octane. Although CH3CN is less polar than CH3OH, both CH3CN and CH3OH are polar in nature. Therefore, CH3CN will be more soluble than CH3OH in the non-polar solvent n-octane.
APPEARS IN
संबंधित प्रश्न
Explain, why do aquatic animals prefer to stay at lower level of water during summer?
State Henry’s law.
H2S, a toxic gas with rotten egg like smell, is used for the qualitative analysis. If the solubility of H2S in water at STP is 0.195 m, calculate Henry’s law constant.
Henry’s law constant for the molality of methane in benzene at 298 K is 4.27 × 105 mm Hg. Calculate the solubility of methane in benzene at 298 K under 760 mm Hg.
The air is a mixture of a number of gases. The major components are oxygen and nitrogen with approximate proportion of 20% is to 79% by volume at 298 K. The water is in equilibrium with air at a pressure of 10 atm. At 298 K if the Henry’s law constants for oxygen and nitrogen are 3.30 × 107 mm and 6.51 × 107 mm respectively, calculate the composition of these gases in water.
Which mixture is used for respiration by deep sea divers?
(A) He + O2
(B) Ne + O2
(C) Ar + O2
(D) Kr + O2
Give reasons for the following :
Aquatic animals are more comfortable in the cold water than in warm water.
A solution is prepared by dissolving 9.25 g of non-volatile solute in 450 mL of water. It has an osmotic pressure of 350 mm of Hg at 27°C. Assuming the solute is non-electrolyte, determine its molecular mass. (R = 0.0821 Lit-atm K−1 mol−1)
The value of Henry's constant KH is ______.
Which of the following factor(s) affect the solubility of a gaseous solute in the fixed volume of liquid solvent?
(a) nature of solute
(b) temperature
(c) pressure
(i) (a) and (c) at constant T
(ii) (a) and (b) at constant P
(iii) (b) and (c) only
(iv) (c) only
Solubility of gases in liquids decreases with rise in temperature because dissolution is an ______.
KH value for \[\ce{Ar(g)}\], \[\ce{CO2(g)}\], \[\ce{HCHO (g)}\] and \[\ce{CH4(g)}\] are 40.39, 1.67, 1.83 × 10–5 and 0.413 respectively. Arrange these gases in the order of their increasing solubility.
Assume that argon exerts a partial pressure of 6 bar. Calculate the solubility of argon gas in water. (Given Henry’s law constant for argon dissolved in water, KH = 40 k bar)
Solubility of gas in liquid decreases with increase in ______.
Write the two applications of Henry’s law.
Identify that the following compound is insoluble, partially soluble or highly soluble in water:
Ethylene glycol
Identify that the following compound is insoluble, partially soluble or highly soluble in water:
Chloroform
