Problem: The heat of combustion of CH4 is 890.4 kJ/mol and the heat capacity of H2O is 75.2 J/molK.Find the volume of methane measured at 298 K and 1.26 atm required to convert 1.01 L of water at 298 K to water vapor at 373 K.

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5Step 1. Determine moles of water:

1.01 L H2O×1 mL10-3 L×1 g1 mL×1 mol H2O18.02 g H2O=56.05 mol H2

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Problem Details

The heat of combustion of CH4 is 890.4 kJ/mol and the heat capacity of H2O is 75.2 J/molK.

Find the volume of methane measured at 298 K and 1.26 atm required to convert 1.01 L of water at 298 K to water vapor at 373 K.