Mg (s) + O₂ (g) → MgO (s) + energy, this reaction may be classified as a/an
Asked in WBPSC CS Prelims 2023 · Topic: Physical and Chemical Changes, Solution (Energy Changes in Chemical Reactions (Exothermic and Endothermic Processes))
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- Combination Reaction Two or more reactants (Mg and O₂) combine to form a single product (MgO). This fits the definition of a combination reaction. 2. Oxidation Reaction Magnesium (Mg) reacts with Oxygen (O₂). In this reaction, Mg loses electrons (its oxidation state changes from 0 to +2) and is oxidized. The reaction with oxygen is a classic example involving oxidation. 3. Exothermic Reaction The term "+ energy" on the product side indicates that energy is released during the reaction. Reactions that release energy are classified as exothermic reactions.Since the reaction fits the description of a Combination reaction, an Oxidation reaction, and an Exothermic reaction, all the individual classifications listed are correct. 189. Which of the following are exothermic processes ? Choose the correct option : - Reaction of water with quick lime - Dilution of sulphuric acid - Evaporation of water - Sublimation of camphor (crystals) - Question not attempted
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- An example of endothermic reaction is : - Question not attempted
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