Question

Explain the following reactions with two examples
i.Oxidation.
ii. Reduction
iii. Combination
iv. Decomposition
v. Displacement
vi. Double displacement
vii. Precipitation
viii.Redox
ix. Exothermic
x. Endothermic​

Answer 1

Answer:

explanation of reactions with two examples are given below .

oxidation and reduction

• Oxidation is the loss of electrons during a reaction by a molecule, atom or ion.
• Oxidation occurs when the oxidation state of a molecule, atom or ion is increased. The opposite process is called reduction, which occurs when there is a gain of electrons or the oxidation state of an atom, molecule, or ion decreases.
• decomposition of hydrogen peroxide is an example of redox reaction.

combination and decomposition

• when two or more atoms combine to form a single product, this is called combination reaction.
• hydrogen and nitrogen gas combine to form ammonia gas it is a combination reaction.
• whenare compound breakdown to its substituent element the phenomenon is called decomposition reaction
• breakdown of calcium carbonate into calcium oxide and carbon dioxide is a decomposition reaction.

displacement reaction

• the reaction in which comparatively more reactive element displaces less reactive element from its salt solution, is called displacement reaction.
• reaction of zinc with copper sulphate solution is a displacement reaction.

double displacement reaction

• the reaction in which exchange of ions take place is called double displacement reaction.
• reaction of sodium sulphate and barium chloride is a double displacement reaction.

precipitation reaction

• the reaction in which an insoluble compound is formed is called precipitation reaction.
• reaction of zinc with copper sulphate solution is also a precipitation reaction in which copper is the precipitate formed.

redox reaction

• oxidation and reduction both take place simultaneously does the reaction in which both occur is called a redox reaction.

exothermic reaction

• the reaction in which energy is released is called exothermic reaction.
• energy could be in form of heat or any other radiation.
• combustion of Coke is a exothermic reaction.

endothermic reaction

• the reaction in which energy is absorbed is called endothermic reaction.
• energy could be in form of heat or any other radiation.
• breakdown of ammonia to form nitrogen and hydrogen gas is endothermic reaction.