The statement that the concentration of carbon will not change if gaseous water is added to the system is false. The concentration of carbon will increase.
What is concentration?
Concentration of a substance is the present of a substance in a per-unit square of an area. It is the total amount of solute present in the solution.
The equilibrium is C(s) + H₂O(g) < - > CO(g) + H₂(g), ΔH = 2296 J.
If we increase or add the gaseous water in the system, the amount of carbon will increase because the carbon is a gas, and increasing the pressure will increase the volume of the gas, at Constant temperature.
Thus, the statement is false.
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