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State Henry's Law. What is the effect of temperature on the solubility of a gas in a liquid?
Concept: Solubility >> Solubility of a Gas in a Liquid
What type of intermolecular attractive interaction exists in the pair of methanol and acetone?
Concept: Ideal and Non-ideal Solutions
State Raoult's law for the solution containing volatile components. What is the similarity between Raoult's law and Henry's law?
Concept: Vapour Pressure of Liquid Solutions >> Vapour Pressure of Solutions of Solids in Liquids
Account for the following :
SnCl4 is more covalent than SnCl2.
Concept: Properties of Solids: Electrical Properties >> Conduction of Electricity in Metals
Arrange the following increasing order of their boiling point:
CH3CH2OH, CH3CHO, CH3–O–CH3
Concept: Colligative Properties and Determination of Molar Mass >> Elevation of Boiling Point
What happens when AgCl is doped with 2? CdCl What is the name of this defect?
Concept: Imperfections in Solids >> Types of Point Defects - Impurity Defects
What type of defect is shown by NaCl in
stoichiometric defects, and
Concept: Imperfections in Solids >> Types of Point Defects - Stoichiometric Defects
non-stoichiometric defects?
Concept: Imperfections in Solids >> Types of Point Defects - Stoichiometric Defects
Predict whether van’t Hoff factor, (i) is less than one or greater than one in the following:
CH3COOH dissolved in water
Concept: Abnormal Molar Masses
An element crystallises in bcc lattic with a cell edge of 3 × 10-8cm. The density of the element is 6.89 g cm-3 . calculate the molar mass of element. (NA = 6.022 × 1023 mol-1)
Concept: Packing Efficiency >> Efficiency of Packing in Body-centred Cubic Structures
What type of semiconductor is obtained when
Ge is doped with In?
Concept: Properties of Solids: Electrical Properties >> Conduction of Electricity in Semiconductors
What type of semiconductor is obtained when
Si is doped with P?
Concept: Properties of Solids: Electrical Properties >> Conduction of Electricity in Semiconductors
Out of NaCl and AgCl, which one shows Frenkel defect and why?
Concept: Imperfections in Solids >> Types of Point Defects - Stoichiometric Defects
Arrange the following in increasing order of boiling points:
(CH3)3 N, C2 H5 OH, C2 H5 NH2
Concept: Colligative Properties and Determination of Molar Mass >> Elevation of Boiling Point
State Raoult’s law for a solution containing volatile components. Write two characteristics of the solution which obey Raoult’s law at all concentrations.
Concept: Vapour Pressure of Liquid Solutions >> Vapour Pressure of Liquid- Liquid Solutions
Out of [CoF6]3- and [Co(en)3]3+, which one complex is
(i) paramagnetic
(ii) more stable
(iii) inner orbital complex and
(iv) high spin complex
(Atomic no. of Co = 27)
Concept: Properties of Solids: Magnetic Properties
What is the role of activated charcoal in a gas mask?
Concept: Types of Solutions
An element crystallizes in fcc lattice with a cell edge of 300 pm. The density of the element is 10.8 g cm-3. calculate the number of atoms in 108 g of the element.
Concept: Calculations Involving Unit Cell Dimensions
A 4% solution(w/w) of sucrose (M = 342 g mol–1) in water has a freezing point of 271.15 K. Calculate the freezing point of 5% glucose (M = 180 g mol–1) in water.
(Given: Freezing point of pure water = 273.15 K)
Concept: Colligative Properties and Determination of Molar Mass >> Depression of Freezing Point
Account for the following :
o-nitrophenol is more steam volatile than p-nitrophenol.
Concept: Classification of Crystalline Solids
