Question

which of the following is redox reaction but not a combination reaction.
a. h2+o2 gives h2o
b.fe3o2+3co gives 2fe+3co2
c.co2+ 1/2o2 gives co2
d.2mg+o2 gives mgo​

Answer 1

Answer:

B- Fe3O2+3CO→ 2Fe+3CO2

Explanation:

Fe3o2 gets reduced and 3CO gets oxidised.

Answer 2

b.fe3o2+3co gives 2fe+3co2  is a redox reaction but it is not a combination reaction.

• redox reactions are oxidation and reduction reactions.
• it is a chemical reaction in which the oxidation states of the reactants are changed.
• the oxidation and reduction reactions always occurs simultaneously.
• in oxidation, loss of electrons takes places.
• in reduction, gain of electrons takes place.
• combination reaction is a type of reaction in which two reactants combines to form a product.

the above reaction is not a combination reaction but it is a redox reaction as oxidation and reduction is taking place simultaneously in this reaction. carbon monoxide (CO) acts as a reducing agent and fe as an oxidising agent.

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