Qualitative Chemistry - QS Study
QS Study

Uses of Fluorine

Uses of Fluorine: Fluorine is used in the manufacture of a series of compounds known as freons. These non-toxic, non-combustible and volatile liquids are used......

Isolation of Fluorine

Fluorine does not occur free in nature. It occurs in the combined form. This was devised by Dennis, Veeder and Rochow in 1931. Symbol –......

Laboratory Preparation of Etching Glass

Laboratory Preparation of Etching Glass: Industrially, hydrogen fluoride is obtained by heating fluorspar (CaF2) with concentrated H2SO4 in a lead vessel. CaF2 + H2SO4 →......

Explain Anamalous Nature of Fluorine

Anamalous Nature of Fluorine Fluorine is the most reactive element among halogen. This is due to the minimum value of F–F bond dissociation energy. Fluorine......

Describe on Hydrides of the Halogens

Hydrides of the Halogens (Hydrogen halides): i) All halogens react with hydrogen to form volatile covalent hydrides of formula HX. ii) These hydrides are called......

Chemical Properties of Halogen

Chemical Properties of HALOGEN 1. Oxidizing power: An important feature of the halogen is their oxidizing property which is due to high electron affinity of......

Effect of Pressure on Solubility

Effect of pressure on solubility: Pressure: There is no effect of temperature on solubility of solid or liquid solute in a liquid solvent. But if......

Effect of Temperature on Solubility

Effect of temperature on solubility: Temperature: In solid substance solubility is related with temperature. Generally if the temperature is increased the solubility of solid substance......

Laboratory Preparation of Phosphine

Phosphine (PH3) is the best known hydride of phosphorus. Laboratory preparation: It is usually obtained by boiling white phosphorus with 30-40% solution of caustic soda......

Laboratory Preparation of Pyrophosphoric Acid

Preparation: Pyrophosphoric acid (H4 P2 O7) is prepared by heating orthophosphoric acid to 523 K – 533 K. 2H3PO4 → H4P2O7 + H2O   Physical......

Laboratory Preparation of Ortho Phosphoric Acid

Preparation 1. Ortho Phosphoric Acid (H3PO4) is prepared by dissolving phosphorus pentoxide in water and boiling the solution. P2O5 + 3H2O → 2H3PO4 2. Laboratory......

Briefly Describe on Steam Distillation?

Steam distillation is a special type of distillation (a separation process) for temperature sensitive substance like natural atomic compounds. Many organic compounds tend to decompose......