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What minimum amount of H2O (in grams) must be added to an empty, sealed 1.00 L...

What minimum amount of H2O (in grams) must be added to an empty, sealed 1.00 L container with normal atmospheric pressure (1.00 atm) to ensure that there is at least some liquid water in it, in addition to the vapor, after the container is heated to 100°C and equilibrium is established. Assume that water vapor approximately obeys the ideal gas law.

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Answer #1

Since it obeys Ideal gas law, we have

where,

P = Vapor pressure of water = 1.00 atm

V = volume of container = 1.00 L

n = number of moles of water

R = universal gas constant = 8.314 J = 0.082 L. atm/(K.mol)

T = temperature in Kelvin = 100 +273 K = 373 K

thus, we get

the molar mass of water = 18 grams/mol

thus, the minimum amount of water is

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