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II: Phase Changes

What quantity of heat is required to vaporize 600. grams of water at 100°C and 101.3 kPa?

User Darrend
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Final answer:

To vaporize 600 grams of water at 100°C and 101.3 kPa, approximately 1360 kJ of heat is required.


Step-by-step explanation:

The quantity of heat required to vaporize water can be calculated using the equation:

q = m * ΔHvap

where q is the quantity of heat, m is the mass of water, and ΔHvap is the enthalpy of vaporization. The enthalpy of vaporization for water is approximately 40.7 kJ/mol. To determine the quantity of heat required to vaporize 600 grams of water, we need to convert grams to moles:

moles=mass/molar mass

The molar mass of water is approximately 18 g/mol, so:

moles = 600 g / 18 g/mol = 33.33 mol

Now, we can calculate the quantity of heat:

q = 33.33 mol * 40.7 kJ/mol = 1360 kJ


Learn more about vaporization of water

User Xeofus
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