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What is the standard enthalpy change for the phase transition from liquid water to steam at 100°C and 1 atm pressure, given that the molar heat of vaporization of water is 40.7 kJ/mol?

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The standard enthalpy change for the phase transition from liquid water to steam at 100C and 1 atm pressure is equal to the molar heat of vaporization of water. In this case, the molar heat of vaporization is given as 40.7 kJ/mol. Therefore, the standard enthalpy change for this phase transition is:H = 40.7 kJ/mol

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