OXIDES OF NITROGEN NITROGEN (I) OXIDE, N2O Nitrogen (I) oxide is known as laughing gas as it causes uncontrollable laughter when inhaled. LABORATORY PREPARATION The gas is prepared in the laboratory by thermal decomposition of ammonium trioxonitrate (V). Ammonium trioxonitrate (V) is not heated directly since the reaction is exothermic and may become uncontrollable leading […]
COMPOUNDS OF NITROGEN Read More »
Classical Concept of Oxidation and Reduction In our daily life we come across processes like rusting of iron articles, fading of the colour of the clothes, burning of the combustible substances such as cooking gas, wood, coal, etc. All these processes fall in the category of redox reactions. A large number’ of industrial processes like,
Concept of Oxidation and Reduction Read More »
Oxygen is the most abundant element on earth. It constitutes 21% by volume of atmospheric air. Occurrence: It occurs as free elements in nature and in combined states. GENERAL PROPERTIES OF OXYGEN FAMILY Elements in group VI include: Oxygen (O), Sulphur (S), Selenium (Se), Tellurium (Te), and Polonium (Po).their properties are as follows: They are
OXYGEN AND ITS COMPOUNDS Read More »
Equilibrium can be defined as the state of a system where there is no observable or detectable change in the properties of the system with respect to time. Examples of system in equilibrium a balanced see – saw a saturated solution of NaCl STATIC AND DYNAMIC EQUILIBRIUM Static equilibrium is attained when a system in
CHEMICAL EQUILIBRIUM | STATIC, DYNAMIC & REVERSIBLE REACTION Read More »
GENERAL PROPERTIES OF THE SULPHUR GROUP (GROUP VI ELEMENTS) The group VI elements include: Oxygen, Sulphur, Selenium, Tellurium and Polonium. Metallic property increases down the group. Oxygen and sulphur are non-metal; selenium and tellurium are metalloid; while polonium is a metal. All the elements are solid except oxygen which is a gas at room temperature.
SULPHUR | USES, PROPERTIES, GROUP VI ELEMENTS Read More »
HYDROGEN SULPHIDE, H2S Hydrogen Sulphide is found in volcanic gases, Sulphur springs, coal gas and natural gas. LABORATORY PREPARATION Hydrogen Sulphide is prepared in the laboratory by the action of dilute acids on metallic sulphide like Iron (II) Sulphide 2HCl(aq) + FeS(s) → FeCl2(aq) + H2S(g) The apparatus used for regular supply of hydrogen Sulphide
COMPOUNDS OF SULPHUR Read More »