Question

Which of the following statements is true if red hot iron is reacted with steam?

• A. It forms triferric tetraoxide
• B. It's a reversible reaction if hydrogen isn't separated
• C. Hydrogen gas is released
• D. Iron oxide formed reacts with hydrogen and reduces back to iron.

Answer 1

Answer: (A), (B), (C), (D)

The correct options are
A

It forms triferric tetraoxide

B

It's a reversible reaction if hydrogen isn't separated

C

Hydrogen gas is released

D

Iron oxide formed reacts with hydrogen and reduces back to iron.

When red-hot iron reacts with steam it forms triferric tetraoxide and hydrogen.

$3Fe\left(s\right)+4H_{2}O\left(g\right)\rightleftharpoons F{e}_3{O}_4\left(s\right)+H_2\left(g\right)\uparrow$

If the hydrogen formed is not removed, the iron oxide formed is reduced back to iron.