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Combination reaction

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Combination reaction

  1. 1. CBSE - 10 Chemical Reactions and EquationsChemistry Types of Chemical Reactions Combination Reaction In this simple combination reaction, magnesium combines with oxygen to form magnesium oxide. 2Mg + O2  2MgO Magnesium ribbon Magnesium oxide powderSubtopic ID: 01.03.01
  2. 2. CBSE - 10 Chemical Reactions and EquationsChemistry Types of Chemical Reactions Combination Reaction Sodium and chlorine combine on heating to form sodium Heat chloride. 2 Na + Cl2 2 NaCl Sodium metal Chlorine gas Sodium chlorideSubtopic ID: 01.03.01
  3. 3. CBSE - 10 Chemical Reactions and EquationsChemistry Types of Chemical Reactions Combination Reaction Sulphur combines with iron on heating to give iron sulphide. Fe + S FeS Iron Iron powder Sulphur powder Mixing iron Iron sulphide powder and sulphurSubtopic ID: 01.03.01
  4. 4. CBSE - 10 Chemical Reactions and EquationsChemistry Types of Chemical Reactions Combination Reaction Let us see some more examples of combination reaction. Nitrogen combines with hydrogen and gives ammonia on heating. Similarly sulphur combines with oxygen Heat to form sulphur dioxide. N2 + 3H2 2NH3 S + O2 SO2Subtopic ID: 01.03.01
  5. 5. CBSE - 10 Chemical Reactions and EquationsChemistry Types of Chemical Reactions Combination Reaction Hydrogen and chlorine combine to form hydrogen chloride. Though this reaction appears to be a simple combination reaction it actually requires an electric spark to trigger the reaction. H2 + Cl2 2HClSubtopic ID: 01.03.01
  6. 6. CBSE - 10 Chemical Reactions and EquationsChemistry Types of Chemical Reactions Combination Reaction Calcium oxide combines with water and gives calcium hydroxide. Look at the solution bubbling like boiling water. This is due to release of heat. Hence it is called exothermic reaction. CaO(s) + H2O(l) Ca(OH)2(aq) + Heat Quick lime Slaked lime ExothermicSubtopic ID: 01.03.01
  7. 7. CBSE - 10 Chemical Reactions and EquationsChemistry Types of Chemical Reactions Combination Reaction Other examples of exothermic reactions are respiration, burning of natural gas and decomposition of vegetable matter. Burning of Natural Gas Respiration Exothermic Reactions - Other Examples Decomposition of VegetablesSubtopic ID: 01.03.01

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