Consider the following equilibrium:
H₂O (l) ⇌ H₂O (g)


At 70°C, what is the value of K_p for this reaction?

• A. 0.3075 atm
• B. 0.5037 atm
• C. 0.6150 atm
• D. 0.7735 atm

Answer: (A)