Question

14.5 moles of I2 gas expands against a constant external pressure of 307 kPa at a constant temperature of 318 K. The initial volume is 56.0 L and the final volume is 97.8 L. You may assume that the molar heat capacity of I2 follows equipartition theory using the translational and rotational modes. No chemical rxn or phase change occurs. a) Calculate w (in J) for the system b) Calculate q (in J) for the system c) Calculate \(\Delta U\) (in J) for the system

          14.5 moles of I2 gas expands against a constant external pressure of 307 kPa at a constant temperature of 318 K. The initial volume is 56.0 L and the final volume is 97.8 L. You may assume that the molar heat capacity of I2 follows equipartition theory using the translational and rotational modes. No chemical rxn or phase change occurs.
a) Calculate w (in J) for the system
b) Calculate q (in J) for the system
c) Calculate \(\Delta U\) (in J) for the system

14.5 moles of I2 gas expands against a constant external pressure of 307 kPa at a constant temperature of 318 K. The initial volume is 56.0 L and the final volume is 97.8 L. You may assume that the molar heat capacity of I2 follows equipartition theory using the translational and rotational modes. No chemical rxn or phase change occurs.
a) Calculate w (in J) for the system
b) Calculate q (in J) for the system
c) Calculate Δ U (in J) for the system

Added by Gregory L.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Supreeta N

03/08/2023

Step 1

The work done by the system can be calculated using the formula: w = -PΔV where P is the external pressure and ΔV is the change in volume. Given: P = 307 kPa = 307,000 Pa ΔV = final volume - initial volume = 97.8 L - 56.0 L = 41.8 L Note: We need to convert Show more…

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Texts: 14.5 moles of l2 gas expands against a constant external pressure of 307 kPa at a constant temperature of 318 K. The initial volume is 56.0 L and the final volume is 97.8 L. You may assume that the molar heat capacity of l2 follows equipartition theory using the translational and rotational modes. No chemical reaction or phase change occurs. a) Calculate w in J for the system. b) Calculate q (in J) for the system. c) Calculate ΔU (in J) for the system.