Define terms: Fuel cell
Concept: Batteries > Primary Batteries
Write the chemical equations involved in the following reactions:(i) Hoffmann-bromamide degradation reaction
Concept: Amines > Preparation of Amines
Write the chemical equations involved in the following reactions:(i) Hoffmann-bromamide degradation reaction
Concept: Amines > Preparation of Amines
The following data were obtained during the first order thermal decomposition of SO2Cl2 at a constant volume :
SO2Cl2 (g) → SO2 (g) + Cl2 (g)
| Experiment | Time/s–1 | Total pressure/atm |
| 1 | 0 | 0.4 |
| 2 | 100 | 0.7 |
Calculate the rate constant.
(Given : log 4 = 0.6021, log 2 = 0.3010)
Concept: Factors Influencing Rate of a Reaction
Account for the following : Nitrogen does not form pentahalide.
Concept: p-Block elements of Group 15 Elements > Dinitrogen
State Henry’s law.
Concept: Solubility > Solubility of a Gas in a Liquid
Explain the term Antiseptics
Concept: Drugs and Their Classification
Define limiting molar conductivity.
Concept: Conductance of Electrolytic Solutions > Variation of Conductivity and Molar Conductivity with Concentration
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
[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 > Magnetic Properties of Coordination Compounds
On the basis of crystal field theory, write the electronic configuration for d4 ion if ∆0 < P.
Concept: Bonding in Coordination Compounds > Crystal Field Theory (CFT)
Distinguish between crystalline solid and amorphous solid
Concept: Types of Solids
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
Sodium crystallizes in bcc structure. If the edge length of unit cell is 4.3 × 10-8 cm, the radius of Na atom is ______.
Concept: Classification of Crystalline Solids
Sodium crystallizes in bcc structure. If the edge length of unit cell is 4.3 × 10-8 cm, the radius of Na atom is ______.
Concept: Classification of Crystalline Solids
A substance crystallizes in fcc structure. The unit cell edge length is 367.8 pm. Calculate the molar mass of the substance if its density is 21.5 g/cm3.
Concept: Packing Efficiency
