When one mole of zinc and two moles of hydrochloric acid undergo the reaction Zn(s)+2HCI(aq) ---> ZNCI2 (aq)+H2 (g), 150.0 kJ of thermal energy are released at 25.00 C and 1.000 atm. The H2 gas generated does approximately 2.500 kJ of work on the surroundings as it expands. Calculate ΔE for the reaction (assume only P-V work is done).a. +103.3 kJb. -145.5 kJc. -147.5 kJd. +152.5 kJe. -152.5 kJ

The reactants are reacting in the stochiometric proportion which leads to complete consumption of…

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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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When one mole of zinc and two moles of hydrochloric acid undergo the reaction Zn(s)+2HCI(aq) ---> ZNCI₂(aq)+H₂(g), 150.0 kJ of thermal energy are released at 25.00 C and 1.000 atm. The H₂ gas generated does approximately 2.500 kJ of work on the surroundings as it expands. Calculate ΔE for the reaction (assume only P-V work is done).

a. +103.3 kJ

b. -145.5 kJ

c. -147.5 kJ

d. +152.5 kJ

e. -152.5 kJ

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