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प्रश्न
Describe briefly the ionic concept of oxidation and reduction. Give an equation to illustrate.
उत्तर
In the electronic concept, oxidation is a process in which an atom or ion loses an electron(s).
Zn → Zn2+ + 2e-
Oxidation is also defined as a chemical process which involves
Addition of oxygen
Addition of electronegative ion
Removal of hydrogen
Removal of electropositive ion (element)
In the electronic concept, reduction is a process in which an atom or ion gains electrons.
Cu2+ + 2e-→ Cu
The reduction is also defined as a chemical process which involves
Removal of oxygen
Addition of electropositive ion
Addition of hydrogen
Removal of electronegative ion
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संबंधित प्रश्न
When a magnesium ribbon burns in air with a dazzling flame and forms a white ash, is magnesium oxidised or reduced? Why?
Give an example of an oxidation reaction.
When a magnesium ribbon is heated, it burns in air to form magnesium oxide. Write a balanced chemical equation for this reaction. Name (i) substance oxidised, and (ii) substance reduced.
In the context of redox reactions, the removal of hydrogen from a substance is known as:
(a) oxidation
(b) dehydration
(c) reduction
(d) dehydrogenation
Write the equation in the ionic form
CuSO4(aq) + Fe(s)→ FeSO4(aq) + Cu(s)
Which among the following are physical or chemical change?
Burning of Liquefied Petroleum Gas (LPG)
What is a redox reaction?
______ is a metal that has a high resistance to corrosion.
What are reducing agents? Give examples.
What are redox reactions? Give examples.
