Question

1.Which of the following correctly represents a balanced chemical equation? *
1 point
A. Fe(s) + 4H2O(g) → Fe3O4 (s) + 4H2(g)
B. 3Fe(s) + 4H2O(g) → Fe3O4 (s) + 4H2(g)
C. 3Fe(s) + H2O(g) → Fe3O4 (s) + H2(g)
D. 3Fe(s) + 4H2O(g) → Fe3O4 (s) + H2(g)​

Answer 1

Answer :-

B. 3Fe(s) + 4H2O(g) → Fe3O4 (s) + 4H2(g) accurately represent a balanced chemical equation.

Explanation :-

There are 3 Fe atoms on the reactant side and also on the product side.

There are 4 H2 atoms on both reactant and product side.

There are 4 O atoms on both reactant and product side.

So , option B is the correct answer.

Answer 2

B. 3Fe(s) + 4H2O(g) → Fe3O4 (s) + 4H2(g) represents balanced chemical equation.

1. In the given reaction, iron is oxidised and hydrogen is reduced. The products are Fe3O4 which is iron (III) oxide and H2 is hydrogen gas.
2. Reactants in the reaction are Fe which is iron and H2O which is water.
3. Iron oxide nanoparticles find wide range of applications due to their properties of chemical stability, biocompatibility etc.