The molar heat of vaporization of substance X at its normal boiling point -185.85 °C is 6.53 kJ mol¹. Calculate the internal energy, enthalpy, and entropy changes for 1 mol of X heated from-192 °C to -150 °C at 1 atm. Assume that Cp,m=75.3 +0.292T/K (JK¹ mol¹) is constant over the temperature range.

The molar heat of vaporization of substance X at its normal boiling point -185.85 °C is 6.53 kJ mol¹. Calculate the internal energy, enthalpy, and entropy changes for 1 mol of X heated from-192 °C to -150 °C at 1 atm. Assume that Cp,m=75.3 +0.292T/K (JK¹ mol¹) is constant over the temperature range.

Chemistry: An Atoms First Approach

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Chapter7: Chemical Energy

Section: Chapter Questions

Problem 62E: In a coffee-cup calorimeter, 1.60 g NH4NO3 is mixed with 75.0 g water at an initial temperature of...

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