What is the number of degrees of freedom for liquid water in equilibrium with a mixture of nitrogen and water vapor?

What is the number of degrees of freedom for liquid water in equilibrium with a mixture of nitrogen and water vapor? Correct Answer 2

Given, number of components $$= 2$$
Number of phases $$= 2$$
$$\eqalign{ & {\text{So, }}f = 2 - 2 + 2 \cr & \Rightarrow f = 2 \cr} $$
Assuming no reaction or reaction taking place very slowly.
Bissoy MCQ

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