Calculate the change in entropy when one mole of metallic aluminum is heated at one bar pressure from an initial temperature of 25 °C to a final temperature of 750 °C. The molar heat capacities of solid and liquid aluminum at one bar pressure are 29.2 J mol1 K1 and 31.75 J mol1 K1, respectively. The specific enthalpy of fusion of aluminum at its melting point (660.46 °C) is 396.57 J g1. The molar mass of aluminum is 26.98 g mol1. (Please explain as much as possible. Why did you use the equation? Or what conditions did you see from the question? etc)

Question
Calculate the change in entropy when one mole of metallic aluminum is heated at one bar pressure from an
initial temperature of 25 °C to a final temperature of 750 °C. The molar heat capacities of solid and liquid
aluminum at one bar pressure are 29.2 J mol1 K1 and 31.75 J mol1 K1, respectively. The specific enthalpy
of fusion of aluminum at its melting point (660.46 °C) is 396.57 J g1. The molar mass of aluminum is 26.98 g
mol1.
(Please explain as much as possible. Why did you use the equation? Or what conditions did you see from the
question? etc)

Image Transcription

Calculate the change in entropy when one mole of metallic aluminum is heated at one bar pressure from an initial temperature of 25 °C to a final temperature of 750 °C. The molar heat capacities of solid and liquid aluminum at one bar pressure are 29.2 J mol1 K1 and 31.75 J mol1 K1, respectively. The specific enthalpy of fusion of aluminum at its melting point (660.46 °C) is 396.57 J g1. The molar mass of aluminum is 26.98 g mol1. (Please explain as much as possible. Why did you use the equation? Or what conditions did you see from the question? etc)

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