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प्रश्न
State whether the given chemical reaction is a redox reaction or not. Justify your answer.
\[\ce{MnO_2 + 4HCl->MnCl_2 +2H_2O + Cl_2}\]
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उत्तर
The given reaction is an example of an oxidation-reduction reaction or redox reaction.
A substance is oxidised when it receives or loses hydrogen during a process. A material is decreased when it loses oxygen or absorbs hydrogen during a process. HCl loses hydrogen in the proposed process to generate Cl2. The provided reaction is thus a redox reaction.
संबंधित प्रश्न
Why does the colour of copper sulphate solution change when an iron nail is dipped in it?
Fill in the following blanks with suitable words:
The addition of hydrogen to a substance is called ........ whereas removal of hydrogen is called .......
In the context of redox reactions, the removal of hydrogen from a substance is known as:
(a) oxidation
(b) dehydration
(c) reduction
(d) dehydrogenation
Explain the following in term of gain or loss of oxygen with two examples.
Oxidation
Identify the reducing agent in the following reactions
`4"NH"_3 + 5"O"_2 -> 4"NO" + 6"H"_2"O"`
Zinc liberates hydrogen gas when reacted with dilute hydrochloric acid whereas copper does not. Explain why?
The sum of the oxidation number of all atoms in a compound is ______.
Identify the following reactions as oxidation/reduction/redox reaction
Zn + CuSO4 → Cu + ZnSO4
In the redox reaction:
MnO2 + 4HCl → MnCl2 + 2H2O + Cl2
State the change in colour observed in following case mentioning the reason:
Copper powder is strongly heated in air.
