Differentiate (write examples also)
1. Combination Reaction and Decomposition Reaction
2. Thermolytic Decomposition and Electrolytic Decomposition
3. Photolytic Decomposition and Electrolytic Decomposition
4. Displacement reaction and double displacement reaction
5. Precipitation reaction and Neutralisation reaction
6. Corrosion and Rusting
7. Rancidity and Redox reaction
8. Oxidising agent and reducing agent
Answers
Answer:
1. The main difference between combination and decomposition reaction is that combination reaction involves a combination of reactants to give a single product whereas decomposition reaction involves the breakdown of a single compound into two or more products.
2.Thermal decomposition is the process of breaking down a chemical compound into simpler substance by heating it. Electrolysis is the process of forcing a chemical reaction that wouldn't normally occur on its own to happen by passing an electric current through the reactants.
3.Electrolysis -: When decomposition reaction is done by electricity is termed electrolysis decomposition reaction. Photolysis -:When decomposition reaction is done by sunlight is termed photolysis decomposition reaction.
4. In a displacement reaction, a more reactive element replaces a less reactive element from a compound. In a double displacement reaction, two atoms or a group of atoms switch places to form new compounds. ... Metals react with the salt solution of another metal. Salt solutions of two different metals react with each other.
5. Precipitation reaction - exchange reaction between two soluble ionic substances that yields an insoluble solid. Neutralization reaction - acid and a base react to yield a salt and water. Weak acids and weak bases are ionized much less than 100% but still produce hydronium ion or hydroxide ion.
6. Corrosion can occur when the substance is exposed to air or some chemicals. Rusting mainly occurs when a metal is exposed to air and moisture. Corrosion results in the formation of the oxides of metal or salts. Only iron oxide is formed when rusting takes place.
7. Generally, students get confused between corrosion and rancidity. Rancidity is different from corrosion although it is also an oxidation reaction. Rancidity is oxidation of fats and oils present in food materials due to which smell and taste of the food material changes.
8. Oxidizing and Reducing Agents. An oxidizing agent, or oxidant, gains electrons and is reduced in a chemical reaction. ... A reducing agent is typically in one of its lower possible oxidation states, and is known as the electron donor. A reducing agent is oxidized, because it loses electrons in the redox reaction.
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