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2 The rate at which a solid dissolves varies directly as the amount of undissolved solid present in the solvent and as the difference between the saturation concentration and the instantaneous concentration of the substance. A saturated solution of salt in H;O will hold approximately 3 Ibs salt/gal. A block of salt weighing 60 Ibs is placed into a vessel containing 100 gal of H;0. If in 5 min, 20 lbs of salt are dissolved, (a) how much salt will be dissolved in one hour? and (b) when will 45 lbs of salt be dissolved?

2 The rate at which a solid dissolves varies directly as the amount of undissolved solid present in the solvent and as the difference between the saturation concentration and the instantaneous concentration of the substance. A saturated solution of salt in H;O will hold approximately 3 Ibs salt/gal. A block of salt weighing 60 Ibs is placed into a vessel containing 100 gal of H;0. If in 5 min, 20 lbs of salt are dissolved, (a) how much salt will be dissolved in one hour? and (b) when will 45 lbs of salt be dissolved?

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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2. The rate at which a solid dissolves varies directly as the amount of undissolved solid present in the solvent and as the difference between the saturation concentration and the instantaneous concentration of the substance. A saturated solution of salt in H2O will hold approximately 3 lbs salt/gal. A block of salt weighing 60 lbs is placed into a vessel containing 100 gal of H20. If in 5 min, 20 lbs of salt are dissolved, (a) how much salt will be dissolved in one hour? and (b) when will 45 lbs of salt be dissolved?
Transcribed Image Text:2. The rate at which a solid dissolves varies directly as the amount of undissolved solid present in the solvent and as the difference between the saturation concentration and the instantaneous concentration of the substance. A saturated solution of salt in H2O will hold approximately 3 lbs salt/gal. A block of salt weighing 60 lbs is placed into a vessel containing 100 gal of H20. If in 5 min, 20 lbs of salt are dissolved, (a) how much salt will be dissolved in one hour? and (b) when will 45 lbs of salt be dissolved?
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