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  • Stage 1

    Answer 4 questions correctly in a row.

In a rigid, closed container, carbon dioxide
(
C
O
2
)
reacts reversibly with hydrogen gas
(
H
2
)
to produce methane
(
C
H
4
)
and water vapor
(
H
2
O
)
.
C
O
2
(g)
+
4
H
2
(g)
C
H
4
(g)
+
2
H
2
O
(g)
Select the equilibrium-constant expression for this reaction.
ref_doc_title.

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