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Mindblown: a blog about philosophy.

  • Introduction Of Chapter

    In a periodic table, all elements found on the planet have been appropriately ordered based on their increasing atomic numbers. There are a total of 118 elements known to us, 92 of which are derived naturally and the remaining 26 are created artificially in the laboratory. Based on their physical and chemical properties, these elements…

  • Plaster of paris

    Plaster of Paris is a widely used chemical compound that is extensively used in sculpting materials and gauze bandages. Plaster of Paris is a white powdery chemical compound that is hydrated calcium sulphate that is usually obtained by calcining gypsum. While we have seen many applications of this material in our everyday lives, if we…

  • Baking soda And Others

    Sodium bicarbonate, also known as baking soda or bicarbonate of soda, is a chemical compound with the formula NaHCO3 and the IUPAC designation sodium hydrogencarbonate. A sodium cation (Na+) and a bicarbonate anion (HCO3) combine to form this salt. Sodium bicarbonate is a white, crystalline substance that is commonly found as a fine powder. It tastes…

  • Bleaching powder

    Bleaching powder is soluble in water and is used as a bleaching agent in textile industries. It is also used as an oxidizing agent and a disinfectant in many industries. It should also be noted that bleaching powder is synthesized by the reacting chlorine gas on dry slaked lime i.e. Ca(OH)2. Chemical formula – Ca(OCl)Cl…

  • Salts

    Salts A salt is a combination of an anion of an acid and a cation of a base. Examples – KCl, NaNO3 ,CaSO4, etc. Salts are usually prepared by the neutralisation reaction of an acid and a base. Common salt Sodium Chloride (NaCl) is referred to as common salt because it’s used all over the world for…

  • Manufacture of Acids and Bases

    Manufacture of acids and bases a) Nonmetal oxide + water → acid SO2(g) + H2O(l) → H2SO3(aq)SO3(g) + H2O(l) → H2SO4(aq)4NO2(g) + 2H2O(l) + O2(g) → 4HNO3(aq) Non-metal oxides are thus referred to as acid anhydrides. b) Hydrogen + halogen → acid H2(g) + Cl2(g) → 2HCl(g)HCl(g) + H2O(l) → HCl(aq) c) Metallic salt + conc. sulphuric acid…

  • Universal indicator

    A universal indicator has a pH range from 0 to 14 that indicates the acidity or alkalinity of a solution.A neutral solution has pH=7 pH pH=−log10[H+]In pure water, [H+]=[OH−]=10−7 mol/L. Hence, the pH of pure water is 7.The pH scale ranges from 0 to 14.If pH < 7 → acidic solutionIf pH > 7→ basic solution pH scale Importance…

  • Strength of acids and bases

    Strong acid or base: When all molecules of a given amount of an acid or a base dissociate completely in water to furnish their respective ions, H+(aq) for acid and OH−(aq) for base).Weak acid or base: When only a few of the molecules of a given amount of an acid or a base dissociate in water to…

  • Diff. b\w a base and an alkali

    Base: Bases undergo neutralisation reaction with acids. They are comprised of metal oxides, metal hydroxides, metal carbonates and metal bicarbonates. Most of them are insoluble in water. Alkali: An alkali is an aqueous solution of a base, (mainly metallic hydroxides). It dissolves in water and dissociates to give OH− ion. All alkalis are bases, but not…

  • Acid-Base Reactions

    A neutralisation reaction occurs when an acid reacts with a base. A salt and water are the end products of this reaction. An acid–base neutralisation reaction is formulated as a double-replacement reaction in this standard approach. Reactions of acids and bases a) Reaction of acids and bases with metals Acids, in general, react with metals…

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