Category: Pure Sciences

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Physical Chemistry

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) […]

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Physical Chemistry

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. […]

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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. […]

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Physical Chemistry

Numerical Problems on Mole Fraction

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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 […]

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Physical Chemistry

Numerical Problems on Percentage by Mass

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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 […]

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Physical Chemistry

Solid and Liquid Solutions

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Science > Chemistry > Solutions and Their Colligative Properties > Solid and Liquid Solutions In this article, we shall study solid and liquid solutions and the concept of solubility curves. A solution of Solids in Liquids:  The dissolution of any substance in a liquid to form a solution is governed by the basic principle that […]

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Physical Chemistry

Solutions and Their Types

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Science > Chemistry > Solutions and Their Colligative Properties > Solutions and Their Types In this article, we shall study the concept of solutions and their types based on phases, composition, etc. The Terminology of Solutions: Solution: A solution is a homogeneous mixture of two or more than two or more components. A solution has […]

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Physics

Principles of Parallel and Perpendicular Axes

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Science > Physics > Rotational Motion > Principles of Parallel and Perpendicular Axes In this article, we shall study the principle of parallel axes and the principle of perpendicular axes and their applications. Principle of Parallel Axes or Parallel Axes Theorem: Statement : The moment of inertia of a rigid body about any axis is […]

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Physics

Kinetic Energy of Rotating Body and Torque Acting on it

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Science > Physics > Rotational Motion > Kinetic Energy of Rotating Body and Torque Acting on it In this article, we shall study kinetic energy of rotating body and torque acting on it. Kinetic Energy of a Rotating Body: Consider a rigid body rotating about axis passing through point O and perpendicular to the plane […]

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Physics

Moment of Inertia

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Science > Physics > Rotational Motion > Concept of Moment of Inertia In this article, we are going to study important physical quantity related to the rotational motion of the body called the moment of inertia and its significance. Rigid Body: A rigid body is one whose geometric shape and size remains unchanged under the […]