1. A house needs 200,000 Btu per day so that its temperature remanins at 68oF. How much CaCl26H2O(s) needs to be used to save enough energy for one day use? The process contains the heating of CaCl26H2O(s) from 68oF to 86oF and the reaction CaCl26H2O(s) = CaCl22H2O(s) + 4H2O(g). The water from the dehydration evaporates during the process.CaCl26H2O(s): ΔHof=-2607.89kJ/gmol, Cp=1.34J/g(oC)CaCl22H2O(s): ΔHof=-1402.90kJ/gmol, Cp=0.97J/g(oC)

In thermodynamics, the heat of reaction is defined as the energy that is released or absorbed when…

Answered: 1. A house needs 200,000 Btu per day so…

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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1. A house needs 200,000 Btu per day so that its temperature remanins at 68^oF. How much CaCl₂6H₂O(s) needs to be used to save enough energy for one day use? The process contains the heating of CaCl₂6H₂O(s) from 68^oF to 86^oF and the reaction CaCl₂6H₂O(s) = CaCl₂2H₂O(s) + 4H₂O(g). The water from the dehydration evaporates during the process.

CaCl₂6H₂O(s): ΔH^o_f=-2607.89kJ/gmol, Cp=1.34J/g(^oC)

CaCl₂₂H₂O(s): ΔH^o_f=-1402.90kJ/gmol, Cp=0.97J/g(^oC)

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