Uncover the Facts

Category: Pure Sciences

Packing in solids

Science > Chemistry > Solid State > Packing in solids In this article, we shall study the different types of close packing of the constituent particles in solids. The Principle of Packing in Solids: In a crystal particle (atoms, molecules or ions) occupy the lattice points in the crystal lattice. These particles may be of […]

Physical Chemistry

Numerical Problems on Type of Crystal Structure

Post author By Hemant More
Post date February 1, 2020
1 Comment on Numerical Problems on Type of Crystal Structure

Science > Chemistry > Solid State > Numerical Problems on Type of Crystal Structure In this article, we shall study to solve problems to calculate the atomic radius, the distance between atoms in the unit cell and to decide the type of crystal structure. Example – 01: A naturally occurring gold crystallizes in face centred […]

Physical Chemistry

Numerical Problems on Density of Solid

Post author By Hemant More
Post date January 31, 2020
3 Comments on Numerical Problems on Density of Solid

Science > Chemistry > Solid State > Numerical Problems on Density of Solid In this article, we shall study to solve numerical problems to find the density of solid, edge length and volume of the unit cell. Example – 01: Silver crystallizes in face centred cubic structure. The edge length of a unit cell is […]

Physical Chemistry

Osmosis and Osmotic Pressure

Post author By Hemant More
Post date January 31, 2020
1 Comment on Osmosis and Osmotic Pressure

Science > Chemistry > Solutions and Their Colligative Properties > Osmosis and Osmotic Pressure In this article, we shall study the phenomenon of osmosis and osmotic pressure. Semipermeable Membrane: A semipermeable membrane is a membrane which allows the solvent molecules, but not the solute molecules through it. Examples: Cellulosde, cellulose nitrate, animal bladder. Osmosis: The spontaneous […]

Tags Abbe Nollet experiment, Chemistry, Colligative properties, Hypertonic solutions, Hypotonic solutions, Isotonic solutions, Osmosis, Osmotic pressure, Semipermeable membrane, Solutions, Van't Hoff's Avogadro's law, Van't Hoff's Boyle's law, Van't Hoff's Charle's law, Van't Hoff's general solution equation, Van't Hoff's theory of solution

Physical Chemistry

Boiling Point Elevation and Freezing Point Depression

Post author By Hemant More
Post date January 31, 2020
No Comments on Boiling Point Elevation and Freezing Point Depression

Science > Chemistry > Solutions and Their Colligative Properties > Boiling Point Elevation and Freezing Point Depression In this article, we shall study two colligative properties of solutions, namely elevation of boiling point and depression in freezing point due to addition of solute. Elevation of Boiling Point: Boiling Point of a Liquid: Boiling point is […]

Tags Boiling point, Chemistry, Colligative properties, Depression of freezing point, Elevation of boiling point, Freezing point, Solutions

Physical Chemistry

Ideal and Non-Ideal solutions

Post author By Hemant More
Post date January 31, 2020
No Comments on Ideal and Non-Ideal solutions

Science > Chemistry > Solutions and Their Colligative Properties > Ideal and Non-Ideal Solutions In this article, we shall study two types of solutions first, those obeying Raoult’s law called ideal solutions and those not obeying Raoult’s law called non-ideal solutions. Ideal Solutions: The solutions which obey Raoult’s law over the entire range of concentration […]

Physical Chemistry

Numerical Problems on Lowering of Vapour Pressure

Post author By Hemant More
Post date January 31, 2020
5 Comments on Numerical Problems on Lowering of Vapour Pressure

Science > Chemistry > Solutions and Their Colligative Properties > Numerical Problems on Lowering of Vapour Pressure In this article, we shall study to solve problems based on relative lowering of vapour pressure and to calculate the molecular mass of a solute. Example – 01: The vapour pressure of a pure liquid at 298K is […]

Tags Barometric method, Chemistry, Clausius Clapeyron equation, Colligative properties, Gas saturation method, Lowering of vapour pressure, Manometric method, Molar mass of solute, Non-volatile solute, Oswald and Walker's dynamic method, Raoult's law, Relative lowering of vapour pressure, Solutions, Vapour pressure, Volatile solute

Physical Chemistry

Lowering of Vapour Pressure of Solution

Post author By Hemant More
Post date January 31, 2020
No Comments on Lowering of Vapour Pressure of Solution

Science > Chemistry > Solutions and Their Colligative Properties > Colligative Properties In this article, we shall learn the meaning of colligative properties, colligative properties of solutions, and the lowering of vapour pressure due to the addition of solute in a solvent. Colligative Properties: Colligative properties are those properties of dilute solutions that depend only […]

Tags Barometric method, Chemistry, Clausius Clapeyron equation, Colligative properties, Gas saturation method, Lowering of vapour pressure, Manometric method, Molar mass of solute, Non-volatile solute, Oswald and Walker's dynamic method, Raoult's law, Relative lowering of vapour pressure, Solutions, Vapour pressure, Volatile solute

Physical Chemistry

Solutions of Gases in Liquids

Post author By Hemant More
Post date January 31, 2020
No Comments on Solutions of Gases in Liquids

Science > Chemistry > Solutions and Their Colligative Properties > Solutions of Gases in Liquids In this article, we shall study solutions of gases in liquids and Henry’s law of solubility. Almost all the gases are soluble in water as well as in other liquids to a greater or lesser extent. The solubility of gases […]

Tags Chemistry, Gas in liquid solutions, Gaseous solution, Henry's law of solubility, Salting out effect, Solubility, Solutions

Physical Chemistry

Short-cut Methods For Calculating Concentration of Solutions

Post author By Hemant More
Post date January 30, 2020
3 Comments on Short-cut Methods For Calculating Concentration of Solutions

Science > Chemistry > Solutions and Their Colligative Properties > Short-cut Methods For Calculating Concentration of Solutions In this article, we shall study short-cut methods to calculate molality, molarity, etc. These methods can only be used in competitive exams only. Direct Formulae to Calculate Molality and Molarity: Where M = molarity in mol L-1 or […]