Author: Hemant More

Ideal and Non-Ideal solutions

Post author By Hemant More
Post date January 31, 2020
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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
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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
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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 […]

Physical Chemistry

Numerical Problems on Molality

Post author By Hemant More
Post date January 30, 2020
23 Comments on Numerical Problems on Molality

Science > Chemistry > Solutions and Their Colligative Properties > Numerical Problems on Molality In this article, we shall study numerical problems to calculate molality of a solution. Example – 01: 7.45 g of potassium chloride (KCl) was dissolved in 100 g of water. Calculate the molality of the solution. Given: mass of solute (KCl) […]

Physical Chemistry

Numerical Problems on Molarity

Post author By Hemant More
Post date January 29, 2020
6 Comments on Numerical Problems on Molarity

Science > Chemistry > Solutions and Their Colligative Properties > Numerical Problems on Molarity In this article, we shall study numerical problems to calculate the molarity of a given solution. Example – 01: A solution of NaOH (molar mass 40 g mol-1) was prepared by dissolving 1.6 g of NaOH in 500 cm3 of water. […]

Physical Chemistry

Concentration of Solution

Science > Chemistry > Solutions and Their Colligative Properties > Concentration of Solution The concentration of a solution is the measure of the composition of a solution. For a given solution, the amount of solute dissolved in a unit volume of solution (or a unit volume of solvent) is called the concentration of the solution. […]

Physical Chemistry

Numerical Problems on Mole Fraction

Post author By Hemant More
Post date January 29, 2020
No Comments on Numerical Problems on Mole Fraction

Science > Chemistry > Solutions and Their Colligative Properties > Numerical Problems on Mole Fraction In this article, we shall study to solve problems to calculate mole fraction of solute and solvent. Example – 01: 23 g of ethyl alcohol (molar mass 46 g mol-1) is dissolved in 54 g of water (molar mass 18 […]

Physical Chemistry

Numerical Problems on Percentage by Mass

Post author By Hemant More
Post date January 29, 2020
7 Comments on Numerical Problems on Percentage by Mass

Science > Chemistry > Solutions and Their Colligative Properties > Percentage Composition In this article, we shall learn to calculate percentages by mass and percentage by volume of a solution. Problems on Percentage by Mass Example – 01: 6 g of urea was dissolved in 500 g of water. Calculate the percentage by mass of […]