Q.

The reaction,

3Fe(s) + 4H2O(I)   Fe(3)O4(s) + 4H2(g) is reversible if it is carried out:

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a

At constant pressure

b

At constant temperature

c

In an open vessel

d

In a closed vessel

answer is D.

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Detailed Solution

3Fe(s) + 4H2O(I)   Fe(3)O4(s) + 4H2(g) 

When reaction happened in closed-vessel, then hydrogen gas won't escape and reaction becomes reversible in nature.

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