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Consider the reaction of aluminum metal with hydrochloric acid. 2 Al(s) + 6 HCl(aq) →2 AlCl3(aq) + 3 H₂(g) When 5.00 g of aluminum is added to an excess of hydrochloric acid, all at a constant pressure of 1 atm and a constant temperature of 298 K, the system expels 99.8 kJ of heat into the surroundings. Calculate the number of moles of hydrogen gas that are produced. Assume that the heat is exchanged without a change in temperature. calculate the amount of work done by the systen when the hydrogen gas expands against a constant-pressure atmosphere of 1 atm at 298 K. (Use R = 8.314 x 10³ kJ mol-¹ K-¹.) Use the sign conventions of heat and work and the First Law of Thermodynamics calculate the change in internal energy of the system.

Consider the reaction of aluminum metal with hydrochloric acid. 2 Al(s) + 6 HCl(aq) →2 AlCl3(aq) + 3 H₂(g) When 5.00 g of aluminum is added to an excess of hydrochloric acid, all at a constant pressure of 1 atm and a constant temperature of 298 K, the system expels 99.8 kJ of heat into the surroundings. Calculate the number of moles of hydrogen gas that are produced. Assume that the heat is exchanged without a change in temperature. calculate the amount of work done by the systen when the hydrogen gas expands against a constant-pressure atmosphere of 1 atm at 298 K. (Use R = 8.314 x 10³ kJ mol-¹ K-¹.) Use the sign conventions of heat and work and the First Law of Thermodynamics calculate the change in internal energy of the system.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Consider the reaction of aluminum metal with hydrochloric acid. 2 Al(s) + 6 HCl(aq) → 2 AlCl3(aq) + 3 H₂(g) When 5.00 g of aluminum is added to an excess of hydrochloric acid, all at a constant pressure of 1 atm and a constant temperature of 298 K, the system expels 99.8 kJ of heat into the surroundings. O Calculate the number of moles of hydrogen gas that are produced. Assume that the heat is exchanged without a change in temperature. calculate the amount of work done by the system when the hydrogen gas expands against a constant-pressure atmosphere of 1 atm at 298 K. (Use R = 8.314 x 10³ kJ mol-¹ K-¹.) Use the sign conventions of heat and work and the First Law of Thermodynamics calculate the change in internal energy of the system.
Transcribed Image Text:Consider the reaction of aluminum metal with hydrochloric acid. 2 Al(s) + 6 HCl(aq) → 2 AlCl3(aq) + 3 H₂(g) When 5.00 g of aluminum is added to an excess of hydrochloric acid, all at a constant pressure of 1 atm and a constant temperature of 298 K, the system expels 99.8 kJ of heat into the surroundings. O Calculate the number of moles of hydrogen gas that are produced. Assume that the heat is exchanged without a change in temperature. calculate the amount of work done by the system when the hydrogen gas expands against a constant-pressure atmosphere of 1 atm at 298 K. (Use R = 8.314 x 10³ kJ mol-¹ K-¹.) Use the sign conventions of heat and work and the First Law of Thermodynamics calculate the change in internal energy of the system.
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