Column I Column II (i) Mass percentage (a)Number of moles of the solute component/ The volume of solution in litres (ii) Volume percentage (b) Number of moles of a component/...
Column I Column II (i) Raoult’s law (a) ∆Tf= Kfm (ii) Henry’s law (b) Π = CRT (iii) Elevation of boiling point (c) p = x1P10+ X2P20 (iv) Depression in freezing point (d) ∆Tb= Kbm (v) Osmotic...
Column I Column II (i) Soda water (a) A solution of the gas in solid (ii) Sugar solution (b) A solution of the gas in gas (iii) German silver (c) A solution of...
Column I Column II (i) Saturated solution (a) Solution having the same osmotic pressure at a given temperature as that of the given solution. (ii) Binary solution (b) A solution whose...
Examples: Cellulose acetate Polyamides
Semi-permeable membrane is a membrane that allows only the movement of solvent molecules but not solute molecules. Examples: Cellulose acetate and phospholipid bilayer in biological cells.
Salt is an agent for de-icing and can be used to dissolve ice. If the freezing point is lowered the ice begins to melt. Thus, the addition of salt to ice reduces the freezing point from O ℃ drop.
An example of water and glucose can be taken to illustrate this. In water, the surface of this liquid will settle with water molecules. If we put glucose into it, some of these areas will be...
(i) At specific composition, methanol-acetone mixture will form minimum boiling azeotrope and will show positive deviation from Raoult’s law. (ii) At specific composition, methanol-acetone mixture...
(a) (i) The bend is a condition that occurs in scuba divers. They have to breathe air under high pressure under water. Nitrogen gas does not dissolve in normal pressure. Under water, they will...
Because of the availability of O2 and the presence of more solubility in the cold water makes the aquatic species feel more comfortable when present in the cold water.
Significance of Henry’s Law constant KH: Henry's law states that in the solution, "the pressure in the gas component at the vapor fraction (p) is equal to the fraction of the gas molecule (x) in...
Any change in the temperature causes a change in the volume, so it changes the molarity of the solution. Therefore, terms such as high percentage, ppm, mole fraction, and molality of a solution are...
"Like dissolves like" term is used when the solvent dissolves in the solvent if its interactions between molecules are the same. This is because polar solutions can be dissolved in polar solvents...
Adding 1 mol of NaCl to 1 liter of water, a point of boiling water rises, while the addition of 1 mol of methyl alcohol to one liter of water reduces its boiling point because when added to a stable...
An azeotropic mixture is shown when both the liquids A & B starts coming in the distillate and the vapour and liquid phase will have the same composition. Via distillation an azeotropic mixture...
(i) a non-volatile solid is dissolved in a volatile liquid. (ii) a non-volatile liquid is dissolved in another volatile liquid. (iii) a gas is dissolved in non-volatile liquid. (iv) a volatile...
Correct Answers: Option (ii) Option (iv) Explanation: For the binary solution, the difference in vapor pressure versus the composition of the solution is given in graphs B and D where, the...
(i) solute and solvent both are same. (ii) osmotic pressure is the same. (iii) solute and solvent may or may not be same. (iv) a solute is always the same solvent may be different. Correct...
(i) Benzene – Toluene (ii) Water-Nitric acid (iii) Water-Ethanol (iv) n-Hexane – n-Heptane Correct Answers: (ii) Water-Nitric acid (iii) Water-Ethanol Explanation: In a particular...
(i) solute (ii) density (iii) elevation in boiling point (iv) depression in freezing point Correct Answers: (iii) elevation in boiling point (iv) depression in freezing point Explanation:...
(i) i = Normal molar mass/Abnormal molar mass (ii) i = Abnormal molar mass/ Normal molar mass (iii) i= Observed colligative property/calculated colligative property (iv) i = Calculated colligative...
(i) It depends on the concentration of a non-electrolyte solute in a solution and does not depend on the nature of the solute molecules. (ii) It depends on a number of particles of electrolyte...
(i) ∆mix H = zero (ii) ∆mix V = zero (iii) These will form a minimum boiling azeotrope. (iv) These will not form the ideal solution. Correct Answers: (iii) These will form a minimum boiling...
(i) (a) and (c) at constant T (ii) (a) and (b) at constant P (iii) (b) and (c) only (iv) (c) only Correct Answers: (i) (a) and (c) at constant T (ii) (a) and (b) at constant P Explanation: At...
(i) HCHO < CH4< CO2 < Ar (ii) HCHO < CO2< CH4< Ar (iii) Ar < CO2< CH4< HCHO (iv) Ar < CH4 < CO2 < HCHO Correct Answer: (iii) Ar < CO2< CH4< HCHO...
(i) 0.004 (ii) 0.008 (iii) 0.012 (iv) 0.016 Correct Answer: (iv) 0.016 Explanation: Let us take, M1 and V1 - molarity and volume of the given solution. M2 and V2 - molarity and volume of...
(i) A–B interactions are stronger than those between A–A or B–B. (ii) vapour pressure of solution increases because more number of molecules of liquids A and B can escape from the solution. (iii)...
(i) the vapour pressure in container (A) is more than that in a container (B). (ii) the vapour pressure in container (A) is less than that in the container (B). (iii) vapour pressure is equal in...
(A) In bromoethane and chloroethane mixture intermolecular interactions of A–A and B–B type are nearly the same as A–B type interactions. (B) In ethanol and acetone mixture A–A or B–B type...
(i) iA< iB< iC (ii) iA> iB> iC (iii) iA= iB= iC (iv) iA<iB> iC Correct Answer: (iii) iA= iB= iC
(i) water will move from the side (A) to side (B) if a pressure lower than the osmotic pressure is applied on piston (B). (ii) water will move from the side (B) to side (A) if a pressure greater...
(i) greater for gases with higher solubility. (ii) greater for gases with lower solubility. (iii) constant for all gases. (iv) not related to the solubility of gases Correct Answer: (ii)...
(i) increases with increase in temperature. (ii) decreases with increase in temperature. (iii) remains constant. (iv) first increases then decrease. Correct Answer: (i) increases with...
(i) Units of atmospheric pressure and osmotic pressure are the same. (ii) In reverse osmosis, solvent molecules move through a semipermeable membrane from a region of lower concentration of solute...
(i) 2, 2 and 2 (ii) 2, 2 and 3 (iii) 1, 1 and 2 (iv) 1, 1 and 1 Correct Answer: (ii) 2, 2 and 3 Explanation: The values of van't Hoff factors for KCl,...
(i) Two different solutions of sucrose of the same molality prepared in different solvents will have the same depression in freezing point. (ii) The osmotic pressure of a solution is given by the...
(i) is higher than that at a dilute solution. (ii) is lower than that of a dilute solution. (iii) is same as that of a dilute solution. (iv) cannot be compared with an osmotic pressure of a dilute...
(i) it gains water due to osmosis. (ii) it loses water due to reverse osmosis. (iii) it gains water due to reverse osmosis. (iv) it loses water due to osmosis. Correct Answer: (iv) it loses...
(i) the same (ii) about twice (iii) about three times (iv) about six times Correct Answer: (iii) about three times Explanation: The depression in freezing point of a 0.01M MgCl2 solution is...
(i) K kg mol-1 or K (molality)-1 (ii) mol kg K-1 or K-1(molality) (iii) kg mol-1 K-1 or K-1(molality)-1 (iv) K mol kg-1 or K (molality) Correct Answer: (i) K kg mol-1 or K (molality)-1...
(i) 1.0 M NaOH (ii) 1.0 M Na2SO4 (iii) 1.0 M NH4NO3 (iv) 1.0 M KNO3 Correct Answer: (ii) 1.0 M Na2SO4 Explanation: Given that a large amount of van's Hoff will increase the boiling point of...
(i) the nature of the solute particles dissolved in solution. (ii) the number of solute particles in solution. (iii) the physical properties of the solute particles dissolved in solution. (iv) the...
(i) Methanol and acetone. (ii) Chloroform and acetone. (iii) Nitric acid and water. (iv) Phenol and aniline. Correct Answer: (i) Methanol and acetone Explanation: The mixture of methanol and...
(i) low temperature (ii) low atmospheric pressure (iii) high atmospheric pressure (iv) both low temperature and high atmospheric pressure Correct Answer: (ii) low atmospheric pressure...
(i) Temperature (ii) Nature of solute (iii) Pressure (iv) Nature of solvent Correct Answer: (iii) Pressure Explanation: Changes in pressure do not affect the solubility of solids and the...
(i) saturated (ii) supersaturated (iii) unsaturated (iv) concentrated Correct Answer: (ii) supersaturated Explanation: Most of the substance does not dissolve when we add more solute will not...
(i) less than the rate of crystallisation (ii) greater than the rate of crystallisation (iii) equal to the rate of crystallisation (iv) zero Correct Answer: (iii) equal to the rate of...
(i) Sugar crystals in cold water. (ii) Sugar crystals in hot water. (iii) Powdered sugar in cold water. (iv) Powdered sugar in hot water. Correct Answer: (iv) Powdered sugar in hot water...
(i) mole fraction (ii) parts per million (iii) mass percentage (iv) molality Correct Answer: (i) mole fraction Explanation: According to Raoult's law, the reduction associated with vapor...