Which of the following statements about the given reaction are correct?3Fe(s) + 4H2O(g) → Fe3O4(s) + 4H2(g)(i) Iron metal is getting oxidised(ii) Water is getting reduced(iii) Water is acting as reducing agent(iv) Water is acting as oxidising agent(a) (i), (ii) and (iii) (b) (iii) and (iv)(c) (i), (ii) and (iv) (d) (ii) and (iv)
Question
Which of the following statements about the given reaction are correct?3Fe(s) + 4H2O(g) → Fe3O4(s) + 4H2(g)(i) Iron metal is getting oxidised(ii) Water is getting reduced(iii) Water is acting as reducing agent(iv) Water is acting as oxidising agent(a) (i), (ii) and (iii) (b) (iii) and (iv)(c) (i), (ii) and (iv) (d) (ii) and (iv)
Solution 1
The given reaction is 3Fe(s) + 4H2O(g) → Fe3O4(s) + 4H2(g).
(i) Iron metal is getting oxidised: This statement is correct. In the reaction, iron (Fe) is changing from an oxidation state of 0 in Fe(s) to an oxidation state of +8/3 in Fe3O4(s). This increase in oxidation state indicates that iron is getting oxidised.
(ii) Water is getting reduced: This statement is correct. In the reaction, oxygen in water is changing from an oxidation state of -2 in H2O to an oxidation state of -8/3 in Fe3O4. This decrease in oxidation state indicates that oxygen in water is getting reduced.
(iii) Water is acting as reducing agent: This statement is incorrect. A reducing agent is a substance that loses electrons in a redox reaction. In this reaction, water is gaining electrons and is therefore not acting as a reducing agent.
(iv) Water is acting as oxidising agent: This statement is correct. An oxidising agent is a substance that gains electrons in a redox reaction. In this reaction, water is gaining electrons and is therefore acting as an oxidising agent.
So, the correct answer is (c) (i), (ii) and (iv).
Solution 2
In the given reaction, iron (Fe) is being converted to iron oxide (Fe3O4) and hydrogen gas (H2) is being produced from water (H2O).
(i) Iron metal is getting oxidised: This is correct. Oxidation is the process of losing electrons. In the reaction, iron (Fe) is losing electrons to become iron oxide (Fe3O4).
(ii) Water is getting reduced: This is correct. Reduction is the process of gaining electrons. In the reaction, water (H2O) is gaining electrons to become hydrogen gas (H2).
(iii) Water is acting as reducing agent: This is incorrect. A reducing agent is a substance that loses electrons in a reaction, thereby causing another substance to be reduced. In this reaction, iron is the reducing agent because it is losing electrons.
(iv) Water is acting as oxidising agent: This is correct. An oxidising agent is a substance that gains electrons in a reaction, thereby causing another substance to be oxidised. In this reaction, water is the oxidising agent because it is gaining electrons.
So, the correct answer is (c) (i), (ii) and (iv).
Similar Questions
Which of the following statements about the given reaction are correct?3Fe(s) + 4H2O(g) → Fe3O4(s) + 4H2(g
Consider the following reaction. Which statement is true?Fe3O4 + 4C → 4CO + 3FeO has been reduced.C has been reduced.C has been displaced.Fe3O4 has been reduced.
The following reaction is an example of a4NH3 (g) + 5O 2(g) → 4NO(g) + 6H2 O(g)(i) displacement reaction(ii) combination reaction(iii) redox reaction(iv) neutralisation reaction(a) (i) and (iv) (b) (ii) and (iii)(c) (i) and (iii) (d) (iii) and (iv)3. Which of the following statements about the given reaction are correct?3Fe(s) + 4H 2O(g) → Fe3 O4 (s) + 4H2 (g)(i) Iron metal is getting oxidised(ii) Water is getting reduced(iii) Water is acting as reducing agent(iv) Water is acting as oxidising agent(a) (i), (ii) and (iii) (b) (iii) and (iv)(c) (i), (ii) and (iv) (d) (ii) and (iv)4. Which of the following are exothermic processes?(i) Reaction of water with quick lime(ii) Dilution of an acid(iii) Evaporation of water(iv) Sublimation of camphor (crystals)(a) (i) and (ii) (b) (ii) and (iii)(c) (i) and (iv) (d) (iii) and (iv)Chemical Reactionsand Equations1CHAPTER
(i) Under what conditions iron reacts with water?(ii) Give the balanced equation of the reaction.(iii) What is noticed if the products are not allowed to escape?
Identify the reactant oxidizsed and the reactant reduced in this chemical reactions 4Fe+3O2----->2FeO3
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