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Physical Chemistry

Buffer Solutions

Science > Chemistry > Physical Chemistry > Ionic Equilibria >Buffer Solutions In this article, we shall study the concept of buffer solution, its characteristics, its types, and preparations. Buffer Solution: A solution, which resists the change in its pH value, even on the addition of a small amount of strong acid or base is called […]

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Physical Chemistry

Ionic Product of water

Science > Chemistry > Physical Chemistry > Ionic Equilibria > Ionic Product of water In this article, we shall study concepts of the ionic product of water, pH and pOH of a solution and their importance. Ion Equilibrium in Water: Water has electrical conductivity, hence it must undergo dissociation. “Dissociation of pure water to a […]

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Physical Chemistry

Ostwald’s Dilution Law

Science > Chemistry > Physical Chemistry > Ionic Equilibria > Ostwald’s Dilution Law In this article, we shall study the Ostwald’s dilution law and its application to weak electrolytes, like weak acids and weak bases. Ostwald’s Dilution Law: A mathematical expression of the law of mass actions that gives the relationship between equilibrium constant/dissociation constant, […]

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Physical Chemistry

Ionic Theory

Science > Chemistry > Physical Chemistry > Ionic Equilibria > Ionic Theory In this article, we shall study Arrhenius ionic theory, the concept of ionization and dissociation, Applying law of mass action to reactions involving ions. Electrolytes on the Basis of Ionic Theory:  According to Arrhenius ionic theory, a substance (acid) base or salt, which […]

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Physical Chemistry

Lewis Concept of Acids and Bases

Science > Chemistry > Physical Chemistry > Ionic Equilibria > Lewis Concept of Acids and Bases In the previous article, we have studies the Arrhenius theory, Bronsted Lowry concept of acids and bases. In this article, we shall study the Lewis concept of acids and bases, its merits and demerits. Lewis Concept of Acids and […]

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Physical Chemistry

Bronsted – Lowry Concept of Acid and Base

Science > Chemistry > Physical Chemistry > Ionic Equilibria > Bronsted- Lowry Concept of Acid and Base In the previous article, we have studied the Arrhenius theory of acids and bases. In this article, we shall study the Bronsted Lowry Concept of acids and bases. In 1923, scientists Bronsted and Lowry proposed more general definitions […]

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Physical Chemistry

Arrhenius Theory of Acids and Bases

Science > Chemistry > Physical Chemistry > Ionic Equilibria > Arrhenius Theory In this article, we shall study the Arrhenius theory of acids and bases, its advantages and limitations. Classical or Functional Definitions of Acid and Base: Acid: An acid is defined as a substance whose water solution has a sour taste, turns blue litmus to […]

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Physical Chemistry

Semiconductors

Science > Chemistry > Solid State > Semiconductors On the basis of electrical conductivity, substances can be classified into three types conductors, insulators, and semiconductors. In this article, we shall have a brief idea of semiconductors. Semiconductors are the substances whose conductivity lies between the conductors and insulators e.g. Germanium, Silicon, etc. They are covalent solids. […]

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Physical Chemistry

Electrical Properties of Solids

Science > Chemistry > Solid State > Electrical Properties of Solids In the last article, we have studied the dielectric properties of solids. In this article, we shall study the electrical properties of solids. Electrical Conductivity: The electrical conductivity of solids is due to the motion of electron or positive holes. The conductivity due to the motion […]

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Physical Chemistry

Dielectric Properties of Solids

Science > Chemistry > Solid State > Magnetic Properties of Solids In the last article, we have studied the magnetic properties of solids. In this article, we shall study the dielectric properties of solids. Source of Dielectric Properties of Solids: In insulators, electrons in the individual atom or ion are bound to corresponding nuclei. Hence […]