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Write the mathematical equation of the first law of thermodynamics for an isochoric process.
Concept: Chemical Thermodynamics and Energetic >> First Law of Thermodynamics
Write the mathematical equation of the first law of thermodynamics for an isochoric process.
Concept: Chemical Thermodynamics and Energetic >> First Law of Thermodynamics
Define the Standard enthalpy of combustion.
Concept: Thermochemistry
Three moles of an ideal gas are expanded isothermally from 15 dm3 to 20 dm3 at a constant external pressure of 1.2 bar. Calculate the amount of work in Joules.
Concept: Expression for Pressure-volume (PV) Work
For a reaction A + B ⟶ P, the rate is given by
Rate = k [A] [B]2
How is the rate of reaction affected if the concentration of B is doubled?
Concept: Factors Influencing Rate of a Reaction
For a reaction A + B ⟶ P, the rate is given by
Rate = k [A] [B]2
What is the overall order of reaction if A is present in large excess?
Concept: Factors Influencing Rate of a Reaction
Explain pseudo-first-order reaction with an example.
Concept: Pseudo First Order Reaction
Describe the manufacturing of H2SO4 by the contact process.
Concept: Chemical Properties of Elements of Groups 16, 17 and 18
Elements of group 16 have lower ionization enthalpy values compared to those of group 15 elements. Explain why?
Concept: Atomic and Physical Properties of Elements of Group 16, 17 and 18
[NiCl4]2− is paramagnetic, while [Ni(CO)4] is diamagnetic, though both are tetrahedral. Why? (Atomic number of Ni = 28)
Concept: Bonding in Coordination Compounds >> Valence Bond Theory (VBT)
Define racemic mixture.
Concept: Physical Properties of Haloalkanes and Haloarenes
How is phenol converted into the following?
Benzene
Concept: Nomenclature of Alcohols, Phenols and Ethers
Write the reactions involved in the preparation of Teflon.
Concept: Introduction to Polymers >> Preparation of Polytetrafluoroethene (Teflon)
Write the reactions involved in the preparation of Teflon.
Concept: Introduction to Polymers >> Preparation of Polytetrafluoroethene (Teflon)
What is ferromagnetism?
Concept: Properties of Solids: Magnetic Properties
An element crystallizes in a f.c.c. lattice with a cell edge of 250 pm. Calculate the density if 300 g of this element contains 2 × 1024 atoms.
Concept: Calculations Involving Unit Cell Dimensions
An element with molar mass 27 g mol−1 forms a cubic unit cell with edge length 4.05 ✕ 10−8 cm. If its density is 2.7 g cm−3, what is the nature of the cubic unit cell?
Concept: Number of Atoms in a Unit Cell
Define the following term:
Schottky defect
Concept: Imperfections in Solids - Introduction
An element with density 2.8 g cm–3 forms a f.c.c. unit cell with edge length 4 x 10–8 cm. Calculate the molar mass of the element.
(Given : NA = 6.022 x 1023 mol –1)
Concept: Calculations Involving Unit Cell Dimensions
