Consider two initially separate metal blocks of aluminium (M, = 26.98 g/mol) and lead (Mr = 207.19 g/mol) in a chamber with adiabatic walls. The lead block of mass 3 g is initially at 100°C and that of aluminium of mass 4 g is initially at 25°C. The blocks are then placed in contact and allowed to thermally equilibrate. The molar heat capacities of the metals are considered constant over the temperature of experiment. At 1 bar, Cpm (Al) = 24.35 JK¹¹mol-¹ and Cp,m(Pb) = 26.44 JK¹mol-¹ Calculate a. b. C. the final temperature. the change in the entropy of the blocks in contact. identify evidence that the process occurred spontaneously or not.

Consider two initially separate metal blocks of aluminium (M, = 26.98 g/mol) and lead (Mr = 207.19 g/mol) in a chamber with adiabatic walls. The lead block of mass 3 g is initially at 100°C and that of aluminium of mass 4 g is initially at 25°C. The blocks are then placed in contact and allowed to thermally equilibrate. The molar heat capacities of the metals are considered constant over the temperature of experiment. At 1 bar, Cpm (Al) = 24.35 JK¹¹mol-¹ and Cp,m(Pb) = 26.44 JK¹mol-¹ Calculate a. b. C. the final temperature. the change in the entropy of the blocks in contact. identify evidence that the process occurred spontaneously or not.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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