Liquid mercury, which is the most stable form of the element mercury under stand

Question

Liquid mercury, which is the most stable form of the element mercury under standard conditions(i.e., 1 atm and 298K), is in equilibrium with mercury above it in the atmosphere.

a) The vapor pressure of mercury at equilibrium in the atmosphere is 10-8atm. What is the standard state chemical potential difference, µoHg, between mercury in pure mercury and mercury at equilibrium in the atmosphere? (R= 8.31 J/mol/K and T= 298K).

b) What is the difference at equilibrium in chemical potential, µHg, between mercury in pure liquid mercury and mercury in atmosphere?

c) Liquid mercury is overlaid with a layer of water, and the liquid mercury and mercury dissolved in the water come to equilibrium. What is the difference in chemical potential, µHg, between mercury in pure liquid mercury and mercury in water solution?

d) What is the standard state chemical potential difference, µoHg, between mercury in pure mercury and mercury which at equilibrium has a concentration in water of 10-6 molar.

e) If mercury in pure liquid form, mercury in water solution on top of the mercury, and mercury in the atmosphere are in equilibrium, what is the pressure of the mercury in the atmosphere? What does this tell you about using a layer of water on top of a mercury spill to prevent mercury from getting into the atmosphere, where it is highly toxic.

Explanation / Answer

Liquid mercury, which is the most stable form of the element mercury under stand

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