Tag: Alloys

Applications of Colloids

Science > Chemistry > Colloids > Applications of Colloids Natural Applications of Colloids: Blue Colour of Sky: When the light is incident on particles whose size is smaller than the wavelength of light, it is scattered. The blue colour of the sky is due to the scattering of light by small particles (dust particles along […]

Physical Chemistry

Associated Colloids (Micelles)

Post author By Hemant More
Post date April 3, 2020
1 Comment on Associated Colloids (Micelles)

Science > Chemistry > Colloids > Associated Colloids (Micelles) In thisarticle, we shall study bout associated colloids :micelles). Multimolecular Colloids: Multimolecular colloids are those systems in which the dispersed phase particles are aggregates of many atoms or molecules. The particles in this colloidal solutions are held together by van der Wall’s forces. e.g. gold sol particles […]

Physical Chemistry

Types of Colloidal Solutions

Post author By Hemant More
Post date April 3, 2020
1 Comment on Types of Colloidal Solutions

Science > Chemistry > Colloids >Types of Colloidal Solutions In this article, we shall study types of colloidal solutions (systems) on the basis of states of the dispersed phase and dispersion medium, the interaction between the dispersed phase and dispersion medium, and on the number of atoms and molecules in a colloidal particle. Types of […]

Physical Chemistry

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

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
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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 […]